[Kotlin] Allow other content-types when only interested in status-code / Unit (#19801)

* Allow Unit response

* Updating samples

* Improve comment for Unit shortcut

modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-okhttp/infrastructure/ApiClient.kt.mustache

@@ -167,8 +167,11 @@ import com.squareup.moshi.adapter
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-allOff-discriminator/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-array-simple-string-jvm-okhttp4/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-bigdecimal-default-okhttp4/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-default-values-jvm-okhttp4/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-enum-default-value/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-gson/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -124,8 +124,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-jackson/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -124,8 +124,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-json-request-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -126,8 +126,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-jvm-okhttp4-coroutines/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -127,8 +127,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-kotlinx-datetime/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-modelMutable/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-moshi-codegen/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-name-parameter-mappings/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ internal open class ApiClient(val baseUrl: String, val client: Call.Factory = de
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-nullable/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-string/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-threetenbp/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin-uppercase-enum/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")
 

samples/client/petstore/kotlin/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt

@@ -125,8 +125,11 @@ open class ApiClient(val baseUrl: String, val client: Call.Factory = defaultClie
         val body = response.body
         if(body == null) {
             return null
-        }
+        } else if (T::class.java == Unit::class.java) {
-        if (T::class.java == File::class.java) {
+            // No need to parse the body when we're not interested in the body
+            // Useful when API is returning other Content-Type
+            return null
+        } else if (T::class.java == File::class.java) {
             // return tempFile
             val contentDisposition = response.header("Content-Disposition")