fixed subpath bug (#21081)

modules/openapi-generator/src/main/resources/csharp/libraries/generichost/api.mustache

@@ -382,7 +382,9 @@ namespace {{packageName}}.{{apiPackage}}
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress{{nrt!}}.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "{{{path}}}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "{{{path}}}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "{{{path}}}");
                     {{/servers}}
                     {{#servers}}
                     {{#-first}}

samples/client/petstore/csharp/generichost/latest/Tags/src/Org.OpenAPITools/Api/APIKEYSApi.cs

@@ -230,7 +230,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/api_keys/{id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/api_keys/{id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/api_keys/{id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Bid%7D", Uri.EscapeDataString(id.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;

samples/client/petstore/csharp/generichost/latest/Tags/src/Org.OpenAPITools/Api/APIKeys0Api.cs

@@ -218,7 +218,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/api_keys/{id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/api_keys/{id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/api_keys/{id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Bid%7D", Uri.EscapeDataString(id.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;

samples/client/petstore/csharp/generichost/latest/Tags/src/Org.OpenAPITools/Api/ApiKeys1Api.cs

@@ -218,7 +218,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/api_keys/{id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/api_keys/{id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/api_keys/{id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Bid%7D", Uri.EscapeDataString(id.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;

samples/client/petstore/csharp/generichost/net4.7/AllOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -234,7 +234,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/person/display/{personId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/person/display/{personId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/person/display/{personId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpersonId%7D", Uri.EscapeDataString(personId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;

samples/client/petstore/csharp/generichost/net4.7/AnyOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -209,7 +209,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.7/AnyOfNoCompare/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -209,7 +209,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.7/FormModels/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.7/FormModels/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -674,7 +676,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -846,7 +850,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1039,7 +1045,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1232,7 +1240,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.7/FormModels/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1367,7 +1367,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1570,7 +1572,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1800,7 +1804,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2017,7 +2023,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2253,7 +2261,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2466,7 +2476,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2659,7 +2671,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2852,7 +2866,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3068,7 +3084,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3257,7 +3275,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3456,7 +3476,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3651,7 +3673,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3978,7 +4002,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4276,7 +4302,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4518,7 +4546,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4722,7 +4752,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4911,7 +4943,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5110,7 +5144,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5379,7 +5415,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5572,7 +5610,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.7/FormModels/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net4.7/FormModels/src/Org.OpenAPITools/Api/PetApi.cs

@@ -990,7 +990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1180,7 +1182,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1456,7 +1460,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1693,7 +1699,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2179,7 +2187,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2404,7 +2414,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2669,7 +2681,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net4.7/FormModels/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -456,7 +456,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -615,7 +617,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -827,7 +831,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1057,7 +1063,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.7/FormModels/src/Org.OpenAPITools/Api/UserApi.cs

@@ -698,7 +698,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -887,7 +889,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1076,7 +1080,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1265,7 +1271,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1447,7 +1455,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1731,7 +1741,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1938,7 +1950,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
                     httpRequestMessageLocalVar.Method = new HttpMethod("GET");
@@ -2123,7 +2137,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream

samples/client/petstore/csharp/generichost/net4.7/OneOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -209,7 +209,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.7/Petstore/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.7/Petstore/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -674,7 +676,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -846,7 +850,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1039,7 +1045,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1232,7 +1240,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.7/Petstore/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1367,7 +1367,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1570,7 +1572,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1800,7 +1804,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2017,7 +2023,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2253,7 +2261,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2466,7 +2476,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2659,7 +2671,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2852,7 +2866,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3068,7 +3084,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3257,7 +3275,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3456,7 +3476,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3651,7 +3673,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3978,7 +4002,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4288,7 +4314,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4530,7 +4558,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4734,7 +4764,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4923,7 +4955,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5122,7 +5156,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5391,7 +5427,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5584,7 +5622,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.7/Petstore/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net4.7/Petstore/src/Org.OpenAPITools/Api/PetApi.cs

@@ -990,7 +990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1180,7 +1182,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1456,7 +1460,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1693,7 +1699,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2179,7 +2187,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2404,7 +2414,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2669,7 +2681,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net4.7/Petstore/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -456,7 +456,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -615,7 +617,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -827,7 +831,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1057,7 +1063,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.7/Petstore/src/Org.OpenAPITools/Api/UserApi.cs

@@ -698,7 +698,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -887,7 +889,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1076,7 +1080,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1265,7 +1271,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1447,7 +1455,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1731,7 +1741,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1938,7 +1950,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
                     httpRequestMessageLocalVar.Method = new HttpMethod("GET");
@@ -2123,7 +2137,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream

samples/client/petstore/csharp/generichost/net4.7/UseDateTimeForDate/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -209,7 +209,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/now");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/now"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/now");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.8/AllOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -234,7 +234,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/person/display/{personId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/person/display/{personId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/person/display/{personId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpersonId%7D", Uri.EscapeDataString(personId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;

samples/client/petstore/csharp/generichost/net4.8/AnyOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -209,7 +209,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.8/AnyOfNoCompare/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -209,7 +209,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.8/FormModels/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.8/FormModels/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -674,7 +676,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -846,7 +850,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1039,7 +1045,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1232,7 +1240,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.8/FormModels/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1367,7 +1367,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1570,7 +1572,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1800,7 +1804,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2017,7 +2023,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2253,7 +2261,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2466,7 +2476,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2659,7 +2671,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2852,7 +2866,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3068,7 +3084,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3257,7 +3275,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3456,7 +3476,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3651,7 +3673,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3978,7 +4002,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4276,7 +4302,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4518,7 +4546,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4722,7 +4752,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4911,7 +4943,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5110,7 +5144,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5379,7 +5415,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5572,7 +5610,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.8/FormModels/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net4.8/FormModels/src/Org.OpenAPITools/Api/PetApi.cs

@@ -990,7 +990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1180,7 +1182,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1456,7 +1460,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1693,7 +1699,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2179,7 +2187,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2404,7 +2414,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2669,7 +2681,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net4.8/FormModels/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -456,7 +456,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -615,7 +617,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -827,7 +831,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1057,7 +1063,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.8/FormModels/src/Org.OpenAPITools/Api/UserApi.cs

@@ -698,7 +698,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -887,7 +889,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1076,7 +1080,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1265,7 +1271,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1447,7 +1455,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1731,7 +1741,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1938,7 +1950,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
                     httpRequestMessageLocalVar.Method = new HttpMethod("GET");
@@ -2123,7 +2137,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream

samples/client/petstore/csharp/generichost/net4.8/OneOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -209,7 +209,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.8/Petstore/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.8/Petstore/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -674,7 +676,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -846,7 +850,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1039,7 +1045,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1232,7 +1240,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net4.8/Petstore/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1367,7 +1367,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1570,7 +1572,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1800,7 +1804,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2017,7 +2023,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2253,7 +2261,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2466,7 +2476,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2659,7 +2671,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2852,7 +2866,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3068,7 +3084,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3257,7 +3275,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3456,7 +3476,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3651,7 +3673,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3978,7 +4002,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4288,7 +4314,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4530,7 +4558,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4734,7 +4764,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4923,7 +4955,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5122,7 +5156,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5391,7 +5427,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5584,7 +5622,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.8/Petstore/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net4.8/Petstore/src/Org.OpenAPITools/Api/PetApi.cs

@@ -990,7 +990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1180,7 +1182,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1456,7 +1460,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1693,7 +1699,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2179,7 +2187,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2404,7 +2414,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2669,7 +2681,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net4.8/Petstore/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -456,7 +456,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -615,7 +617,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -827,7 +831,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1057,7 +1063,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net4.8/Petstore/src/Org.OpenAPITools/Api/UserApi.cs

@@ -698,7 +698,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -887,7 +889,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1076,7 +1080,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1265,7 +1271,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1447,7 +1455,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1731,7 +1741,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1938,7 +1950,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
                     httpRequestMessageLocalVar.Method = new HttpMethod("GET");
@@ -2123,7 +2137,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream

samples/client/petstore/csharp/generichost/net4.8/UseDateTimeForDate/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -209,7 +209,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/now");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/now"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/now");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net8/AllOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -236,7 +236,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/person/display/{personId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/person/display/{personId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/person/display/{personId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpersonId%7D", Uri.EscapeDataString(personId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;

samples/client/petstore/csharp/generichost/net8/AnyOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -211,7 +211,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net8/AnyOfNoCompare/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -211,7 +211,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net8/FormModels/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/FormModels/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -675,7 +677,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -847,7 +851,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1041,7 +1047,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1235,7 +1243,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net8/FormModels/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1367,7 +1367,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1571,7 +1573,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1802,7 +1806,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2020,7 +2026,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2257,7 +2265,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2471,7 +2481,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2665,7 +2677,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2859,7 +2873,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3076,7 +3092,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3265,7 +3283,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3464,7 +3484,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3659,7 +3681,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3987,7 +4011,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4285,7 +4311,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4527,7 +4555,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4732,7 +4762,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4921,7 +4953,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5120,7 +5154,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5389,7 +5425,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5583,7 +5621,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/FormModels/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net8/FormModels/src/Org.OpenAPITools/Api/PetApi.cs

@@ -990,7 +990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1181,7 +1183,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1458,7 +1462,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1696,7 +1702,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2183,7 +2191,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2408,7 +2418,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2674,7 +2686,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net8/FormModels/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -456,7 +456,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -616,7 +618,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -829,7 +833,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1060,7 +1066,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/FormModels/src/Org.OpenAPITools/Api/UserApi.cs

@@ -706,7 +706,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -895,7 +897,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1084,7 +1088,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1273,7 +1279,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1456,7 +1464,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1741,7 +1751,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1976,7 +1988,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2162,7 +2176,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream

samples/client/petstore/csharp/generichost/net8/NullReferenceTypes/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -271,7 +271,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/NullReferenceTypes/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -460,7 +460,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -677,7 +679,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -849,7 +853,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1043,7 +1049,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1237,7 +1245,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net8/NullReferenceTypes/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1369,7 +1369,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1573,7 +1575,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1804,7 +1808,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2022,7 +2028,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2259,7 +2267,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2473,7 +2483,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2667,7 +2679,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2861,7 +2875,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3078,7 +3094,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3267,7 +3285,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3466,7 +3486,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3661,7 +3683,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3989,7 +4013,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4299,7 +4325,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4541,7 +4569,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4746,7 +4776,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4935,7 +4967,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5134,7 +5168,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5403,7 +5439,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5597,7 +5635,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/NullReferenceTypes/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -271,7 +271,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net8/NullReferenceTypes/src/Org.OpenAPITools/Api/PetApi.cs

@@ -992,7 +992,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1183,7 +1185,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1460,7 +1464,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1698,7 +1704,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2185,7 +2193,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2410,7 +2420,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2676,7 +2688,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net8/NullReferenceTypes/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -618,7 +620,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -831,7 +835,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1062,7 +1068,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/NullReferenceTypes/src/Org.OpenAPITools/Api/UserApi.cs

@@ -708,7 +708,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -897,7 +899,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1086,7 +1090,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1275,7 +1281,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1458,7 +1466,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1743,7 +1753,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1978,7 +1990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2164,7 +2178,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream

samples/client/petstore/csharp/generichost/net8/OneOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -211,7 +211,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net8/Petstore/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/Petstore/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -675,7 +677,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -847,7 +851,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1041,7 +1047,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1235,7 +1243,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net8/Petstore/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1367,7 +1367,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1571,7 +1573,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1802,7 +1806,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2020,7 +2026,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2257,7 +2265,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2471,7 +2481,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2665,7 +2677,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2859,7 +2873,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3076,7 +3092,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3265,7 +3283,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3464,7 +3484,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3659,7 +3681,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3987,7 +4011,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4297,7 +4323,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4539,7 +4567,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4744,7 +4774,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4933,7 +4965,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5132,7 +5166,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5401,7 +5437,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5595,7 +5633,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/Petstore/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net8/Petstore/src/Org.OpenAPITools/Api/PetApi.cs

@@ -990,7 +990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1181,7 +1183,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1458,7 +1462,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1696,7 +1702,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2183,7 +2191,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2408,7 +2418,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2674,7 +2686,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net8/Petstore/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -456,7 +456,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -616,7 +618,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -829,7 +833,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1060,7 +1066,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/Petstore/src/Org.OpenAPITools/Api/UserApi.cs

@@ -706,7 +706,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -895,7 +897,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1084,7 +1088,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1273,7 +1279,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1456,7 +1464,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1741,7 +1751,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1976,7 +1988,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2162,7 +2176,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream

samples/client/petstore/csharp/generichost/net8/SourceGeneration/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -271,7 +271,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/SourceGeneration/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -460,7 +460,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -677,7 +679,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -849,7 +853,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1043,7 +1049,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1237,7 +1245,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net8/SourceGeneration/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1369,7 +1369,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1573,7 +1575,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1804,7 +1808,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2022,7 +2028,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2259,7 +2267,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2473,7 +2483,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2667,7 +2679,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2861,7 +2875,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3078,7 +3094,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3267,7 +3285,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3466,7 +3486,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3661,7 +3683,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3989,7 +4013,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4299,7 +4325,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4541,7 +4569,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4746,7 +4776,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4935,7 +4967,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5134,7 +5168,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5403,7 +5439,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5597,7 +5635,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/SourceGeneration/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -271,7 +271,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net8/SourceGeneration/src/Org.OpenAPITools/Api/PetApi.cs

@@ -992,7 +992,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1183,7 +1185,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1460,7 +1464,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1698,7 +1704,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2185,7 +2193,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2410,7 +2420,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2676,7 +2688,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net8/SourceGeneration/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -618,7 +620,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -831,7 +835,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1062,7 +1068,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net8/SourceGeneration/src/Org.OpenAPITools/Api/UserApi.cs

@@ -708,7 +708,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -897,7 +899,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1086,7 +1090,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1275,7 +1281,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1458,7 +1466,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1743,7 +1753,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1978,7 +1990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2164,7 +2178,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream

samples/client/petstore/csharp/generichost/net8/UseDateTimeForDate/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -211,7 +211,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/now");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/now"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/now");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net9/AllOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -236,7 +236,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/person/display/{personId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/person/display/{personId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/person/display/{personId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpersonId%7D", Uri.EscapeDataString(personId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;

samples/client/petstore/csharp/generichost/net9/AnyOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -211,7 +211,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net9/AnyOfNoCompare/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -211,7 +211,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net9/FormModels/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net9/FormModels/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -675,7 +677,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -847,7 +851,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1041,7 +1047,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1235,7 +1243,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net9/FormModels/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1367,7 +1367,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1571,7 +1573,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1802,7 +1806,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2020,7 +2026,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2257,7 +2265,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2471,7 +2481,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2665,7 +2677,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2859,7 +2873,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3076,7 +3092,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3265,7 +3283,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3464,7 +3484,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3659,7 +3681,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3987,7 +4011,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4285,7 +4311,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4527,7 +4555,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4732,7 +4762,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4921,7 +4953,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5120,7 +5154,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5389,7 +5425,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5583,7 +5621,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net9/FormModels/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net9/FormModels/src/Org.OpenAPITools/Api/PetApi.cs

@@ -990,7 +990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1181,7 +1183,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1458,7 +1462,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1696,7 +1702,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2183,7 +2191,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2408,7 +2418,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2674,7 +2686,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net9/FormModels/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -456,7 +456,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -616,7 +618,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -829,7 +833,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1060,7 +1066,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net9/FormModels/src/Org.OpenAPITools/Api/UserApi.cs

@@ -706,7 +706,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -895,7 +897,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1084,7 +1088,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1273,7 +1279,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1456,7 +1464,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1741,7 +1751,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1976,7 +1988,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2162,7 +2176,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream

samples/client/petstore/csharp/generichost/net9/NullReferenceTypes/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -271,7 +271,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net9/NullReferenceTypes/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -460,7 +460,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -677,7 +679,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -849,7 +853,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1043,7 +1049,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1237,7 +1245,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net9/NullReferenceTypes/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1369,7 +1369,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1573,7 +1575,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1804,7 +1808,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2022,7 +2028,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2259,7 +2267,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2473,7 +2483,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2667,7 +2679,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2861,7 +2875,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3078,7 +3094,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3267,7 +3285,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3466,7 +3486,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3661,7 +3683,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3989,7 +4013,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4299,7 +4325,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4541,7 +4569,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4746,7 +4776,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4935,7 +4967,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5134,7 +5168,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5403,7 +5439,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5597,7 +5635,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net9/NullReferenceTypes/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -271,7 +271,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net9/NullReferenceTypes/src/Org.OpenAPITools/Api/PetApi.cs

@@ -992,7 +992,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1183,7 +1185,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1460,7 +1464,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1698,7 +1704,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2185,7 +2193,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2410,7 +2420,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2676,7 +2688,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net9/NullReferenceTypes/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -618,7 +620,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -831,7 +835,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1062,7 +1068,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net9/NullReferenceTypes/src/Org.OpenAPITools/Api/UserApi.cs

@@ -708,7 +708,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -897,7 +899,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1086,7 +1090,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1275,7 +1281,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1458,7 +1466,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1743,7 +1753,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1978,7 +1990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2164,7 +2178,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream

samples/client/petstore/csharp/generichost/net9/OneOf/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -211,7 +211,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress!.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net9/Petstore/src/Org.OpenAPITools/Api/AnotherFakeApi.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/another-fake/dummy"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/another-fake/dummy");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net9/Petstore/src/Org.OpenAPITools/Api/DefaultApi.cs

@@ -458,7 +458,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/foo"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/foo");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -675,7 +677,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/country"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/country");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -847,7 +851,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/hello"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/hello");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1041,7 +1047,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/roles/report"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/roles/report");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1235,7 +1243,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/test");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 

samples/client/petstore/csharp/generichost/net9/Petstore/src/Org.OpenAPITools/Api/FakeApi.cs

@@ -1367,7 +1367,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/health"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/health");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -1571,7 +1573,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/boolean"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/boolean");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -1802,7 +1806,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/composite"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/composite");
 
                     if (outerComposite.IsSet)
                         httpRequestMessageLocalVar.Content = (outerComposite.Value as object) is System.IO.Stream stream
@@ -2020,7 +2026,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/number"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/number");
 
                     if (body.IsSet)
                         httpRequestMessageLocalVar.Content = (body.Value as object) is System.IO.Stream stream
@@ -2257,7 +2265,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/outer/string"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/outer/string");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -2471,7 +2481,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/array-of-enums"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/array-of-enums");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2665,7 +2677,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/anyOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/anyOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2859,7 +2873,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/mixed/oneOf"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/mixed/oneOf");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -3076,7 +3092,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/additionalProperties-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/additionalProperties-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3265,7 +3283,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-file-schema"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-file-schema");
 
                     httpRequestMessageLocalVar.Content = (fileSchemaTestClass as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3464,7 +3484,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/body-with-query-params"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/body-with-query-params");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -3659,7 +3681,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     httpRequestMessageLocalVar.Content = (modelClient as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -3987,7 +4011,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -4297,7 +4323,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4539,7 +4567,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -4744,7 +4774,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -4933,7 +4965,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/inline-freeform-additionalProperties"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/inline-freeform-additionalProperties");
 
                     httpRequestMessageLocalVar.Content = (testInlineFreeformAdditionalPropertiesRequest as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -5132,7 +5166,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/jsonFormData"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/jsonFormData");
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
 
@@ -5401,7 +5437,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/test-query-parameters"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/test-query-parameters");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -5595,7 +5633,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/stringMap-reference"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/stringMap-reference");
 
                     httpRequestMessageLocalVar.Content = (requestBody as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net9/Petstore/src/Org.OpenAPITools/Api/FakeClassnameTags123Api.cs

@@ -269,7 +269,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake_classname_test"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake_classname_test");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 

samples/client/petstore/csharp/generichost/net9/Petstore/src/Org.OpenAPITools/Api/PetApi.cs

@@ -990,7 +990,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     if (apiKey.IsSet)
@@ -1181,7 +1183,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByStatus"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByStatus");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1458,7 +1462,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/findByTags"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/findByTags");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1696,7 +1702,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
@@ -2183,7 +2191,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2408,7 +2418,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/pet/{petId}/uploadImage"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/pet/{petId}/uploadImage");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();
@@ -2674,7 +2686,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/fake/{petId}/uploadImageWithRequiredFile"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/fake/{petId}/uploadImageWithRequiredFile");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7BpetId%7D", Uri.EscapeDataString(petId.ToString()));
 
                     MultipartContent multipartContentLocalVar = new MultipartContent();

samples/client/petstore/csharp/generichost/net9/Petstore/src/Org.OpenAPITools/Api/StoreApi.cs

@@ -456,7 +456,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -616,7 +618,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/inventory"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/inventory");
 
                     List<TokenBase> tokenBaseLocalVars = new List<TokenBase>();
                     ApiKeyToken apiKeyTokenLocalVar1 = (ApiKeyToken) await ApiKeyProvider.GetAsync("api-key", cancellationToken).ConfigureAwait(false);
@@ -829,7 +833,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order/{order_id}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order/{order_id}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Border_id%7D", Uri.EscapeDataString(orderId.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1060,7 +1066,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/store/order"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/store/order");
 
                     httpRequestMessageLocalVar.Content = (order as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)

samples/client/petstore/csharp/generichost/net9/Petstore/src/Org.OpenAPITools/Api/UserApi.cs

@@ -706,7 +706,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -895,7 +897,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithArray"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithArray");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1084,7 +1088,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/createWithList"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/createWithList");
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream
                         ? httpRequestMessageLocalVar.Content = new StreamContent(stream)
@@ -1273,7 +1279,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1456,7 +1464,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
@@ -1741,7 +1751,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/login"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/login");
 
                     System.Collections.Specialized.NameValueCollection parseQueryStringLocalVar = System.Web.HttpUtility.ParseQueryString(string.Empty);
 
@@ -1976,7 +1988,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/logout"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/logout");
 
                     httpRequestMessageLocalVar.RequestUri = uriBuilderLocalVar.Uri;
 
@@ -2162,7 +2176,9 @@ namespace Org.OpenAPITools.Api
                     uriBuilderLocalVar.Host = HttpClient.BaseAddress.Host;
                     uriBuilderLocalVar.Port = HttpClient.BaseAddress.Port;
                     uriBuilderLocalVar.Scheme = HttpClient.BaseAddress.Scheme;
-                    uriBuilderLocalVar.Path = string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
+                    uriBuilderLocalVar.Path = HttpClient.BaseAddress.AbsolutePath == "/"
+                        ? "/user/{username}"
+                        : string.Concat(HttpClient.BaseAddress.AbsolutePath, "/user/{username}");
                     uriBuilderLocalVar.Path = uriBuilderLocalVar.Path.Replace("%7Busername%7D", Uri.EscapeDataString(username.ToString()));
 
                     httpRequestMessageLocalVar.Content = (user as object) is System.IO.Stream stream