diff --git a/.github/workflows/samples-kotlin-client.yaml b/.github/workflows/samples-kotlin-client.yaml
index 9fe322623d7..e12810ee3b4 100644
--- a/.github/workflows/samples-kotlin-client.yaml
+++ b/.github/workflows/samples-kotlin-client.yaml
@@ -4,9 +4,11 @@ on:
   push:
     branches:
       - 'samples/client/petstore/kotlin*/**'
+      - 'samples/client/others/kotlin-jvm-okhttp-parameter-tests/**'
   pull_request:
     paths:
       - 'samples/client/petstore/kotlin*/**'
+      - 'samples/client/others/kotlin-jvm-okhttp-parameter-tests/**'
 
 env:
   GRADLE_VERSION: 6.9
@@ -60,6 +62,7 @@ jobs:
           - samples/client/petstore/kotlin-jvm-spring-3-webclient
           - samples/client/petstore/kotlin-spring-cloud
           - samples/client/petstore/kotlin-name-parameter-mappings
+          - samples/client/others/kotlin-jvm-okhttp-parameter-tests
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-java@v3
diff --git a/bin/configs/kotlin-jvm-okhttp-parameter-tests.yaml b/bin/configs/kotlin-jvm-okhttp-parameter-tests.yaml
new file mode 100644
index 00000000000..1f1a37de219
--- /dev/null
+++ b/bin/configs/kotlin-jvm-okhttp-parameter-tests.yaml
@@ -0,0 +1,7 @@
+generatorName: kotlin
+outputDir: samples/client/others/kotlin-jvm-okhttp-parameter-tests
+library: jvm-okhttp4
+inputSpec: modules/openapi-generator/src/test/resources/3_0/parameter-test-spec.yaml
+templateDir: modules/openapi-generator/src/main/resources/kotlin-client
+additionalProperties:
+  artifactId: kotlin-petstore-okhttp4-parameter-tests
diff --git a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractKotlinCodegen.java b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractKotlinCodegen.java
index 0f33606640f..30dd20f83f7 100644
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractKotlinCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractKotlinCodegen.java
@@ -18,6 +18,8 @@
 package org.openapitools.codegen.languages;
 
 import com.fasterxml.jackson.databind.node.ArrayNode;
+import com.google.common.collect.ImmutableMap;
+import com.samskivert.mustache.Mustache;
 import io.swagger.v3.oas.models.media.ArraySchema;
 import io.swagger.v3.oas.models.media.ComposedSchema;
 import io.swagger.v3.oas.models.media.Schema;
@@ -27,6 +29,8 @@ import org.apache.commons.lang3.StringUtils;
 import org.openapitools.codegen.*;
 import org.openapitools.codegen.model.ModelMap;
 import org.openapitools.codegen.model.ModelsMap;
+import org.openapitools.codegen.templating.mustache.EscapeChar;
+import org.openapitools.codegen.templating.mustache.JoinWithCommaLambda;
 import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
@@ -1165,4 +1169,10 @@ public abstract class AbstractKotlinCodegen extends DefaultCodegen implements Co
     public void setAdditionalModelTypeAnnotations(final List<String> additionalModelTypeAnnotations) {
         this.additionalModelTypeAnnotations = additionalModelTypeAnnotations;
     }
+
+    @Override
+    protected ImmutableMap.Builder<String, Mustache.Lambda> addMustacheLambdas() {
+        return super.addMustacheLambdas()
+                .put("escapeDollar", new EscapeChar("(?<!\\\\)\\$", "\\\\\\$"));
+    }
 }
diff --git a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-okhttp/api.mustache b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-okhttp/api.mustache
index f05ec3e378b..f450d57e100 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-okhttp/api.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-client/libraries/jvm-okhttp/api.mustache
@@ -190,7 +190,7 @@ import {{packageName}}.infrastructure.toMultiValue
           }}{{#bodyParams}}{{{paramName}}}{{/bodyParams}}{{/hasBodyParam}}{{^hasBodyParam}}{{!
           }}{{^hasFormParams}}null{{/hasFormParams}}{{!
           }}{{#hasFormParams}}mapOf({{#formParams}}
-            "{{{baseName}}}" to PartConfig(body = {{{paramName}}}{{#isEnum}}.value{{/isEnum}}, headers = mutableMapOf({{#contentType}}"Content-Type" to "{{contentType}}"{{/contentType}})),{{!
+            "{{#lambda.escapeDollar}}{{{baseName}}}{{/lambda.escapeDollar}}" to PartConfig(body = {{{paramName}}}{{#isEnum}}.value{{/isEnum}}, headers = mutableMapOf({{#contentType}}"Content-Type" to "{{contentType}}"{{/contentType}})),{{!
             }}{{/formParams}}){{/hasFormParams}}{{!
         }}{{/hasBodyParam}}
         val localVariableQuery: MultiValueMap = {{^hasQueryParams}}mutableMapOf()
@@ -199,17 +199,17 @@ import {{packageName}}.infrastructure.toMultiValue
                 {{#queryParams}}
                 {{^required}}
                 if ({{{paramName}}} != null) {
-                    put("{{baseName}}", {{#isContainer}}toMultiValue({{{paramName}}}.toList(), "{{collectionFormat}}"){{/isContainer}}{{^isContainer}}listOf({{#isDateTime}}parseDateToQueryString({{{paramName}}}){{/isDateTime}}{{#isDate}}parseDateToQueryString({{{paramName}}}){{/isDate}}{{#isEnum}}{{{paramName}}}.value{{/isEnum}}{{^isEnum}}{{^isDateTime}}{{^isDate}}{{{paramName}}}.toString(){{/isDate}}{{/isDateTime}}{{/isEnum}}){{/isContainer}})
+                    put("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", {{#isContainer}}toMultiValue({{{paramName}}}.toList(), "{{collectionFormat}}"){{/isContainer}}{{^isContainer}}listOf({{#isDateTime}}parseDateToQueryString({{{paramName}}}){{/isDateTime}}{{#isDate}}parseDateToQueryString({{{paramName}}}){{/isDate}}{{#isEnum}}{{{paramName}}}.value{{/isEnum}}{{^isEnum}}{{^isDateTime}}{{^isDate}}{{{paramName}}}.toString(){{/isDate}}{{/isDateTime}}{{/isEnum}}){{/isContainer}})
                 }
                 {{/required}}
                 {{#required}}
                 {{#isNullable}}
                 if ({{{paramName}}} != null) {
-                    put("{{baseName}}", {{#isContainer}}toMultiValue({{{paramName}}}.toList(), "{{collectionFormat}}"){{/isContainer}}{{^isContainer}}listOf({{#isDateTime}}parseDateToQueryString({{{paramName}}}){{/isDateTime}}{{#isDate}}parseDateToQueryString({{{paramName}}}){{/isDate}}{{#isEnum}}{{{paramName}}}.value{{/isEnum}}{{^isEnum}}{{^isDateTime}}{{^isDate}}{{{paramName}}}.toString(){{/isDate}}{{/isDateTime}}{{/isEnum}}){{/isContainer}})
+                    put("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", {{#isContainer}}toMultiValue({{{paramName}}}.toList(), "{{collectionFormat}}"){{/isContainer}}{{^isContainer}}listOf({{#isDateTime}}parseDateToQueryString({{{paramName}}}){{/isDateTime}}{{#isDate}}parseDateToQueryString({{{paramName}}}){{/isDate}}{{#isEnum}}{{{paramName}}}.value{{/isEnum}}{{^isEnum}}{{^isDateTime}}{{^isDate}}{{{paramName}}}.toString(){{/isDate}}{{/isDateTime}}{{/isEnum}}){{/isContainer}})
                 }
                 {{/isNullable}}
                 {{^isNullable}}
-                put("{{baseName}}", {{#isContainer}}toMultiValue({{{paramName}}}.toList(), "{{collectionFormat}}"){{/isContainer}}{{^isContainer}}listOf({{#isDateTime}}parseDateToQueryString({{{paramName}}}){{/isDateTime}}{{#isDate}}parseDateToQueryString({{{paramName}}}){{/isDate}}{{#isEnum}}{{{paramName}}}.value{{/isEnum}}{{^isEnum}}{{^isDateTime}}{{^isDate}}{{{paramName}}}.toString(){{/isDate}}{{/isDateTime}}{{/isEnum}}){{/isContainer}})
+                put("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}", {{#isContainer}}toMultiValue({{{paramName}}}.toList(), "{{collectionFormat}}"){{/isContainer}}{{^isContainer}}listOf({{#isDateTime}}parseDateToQueryString({{{paramName}}}){{/isDateTime}}{{#isDate}}parseDateToQueryString({{{paramName}}}){{/isDate}}{{#isEnum}}{{{paramName}}}.value{{/isEnum}}{{^isEnum}}{{^isDateTime}}{{^isDate}}{{{paramName}}}.toString(){{/isDate}}{{/isDateTime}}{{/isEnum}}){{/isContainer}})
                 {{/isNullable}}
                 {{/required}}
                 {{/queryParams}}
@@ -217,7 +217,7 @@ import {{packageName}}.infrastructure.toMultiValue
             {{/hasQueryParams}}
         val localVariableHeaders: MutableMap<String, String> = mutableMapOf({{#hasFormParams}}"Content-Type" to {{^consumes}}"multipart/form-data"{{/consumes}}{{#consumes.0}}"{{{mediaType}}}"{{/consumes.0}}{{/hasFormParams}})
         {{#headerParams}}
-        {{{paramName}}}{{^required}}?{{/required}}.apply { localVariableHeaders["{{baseName}}"] = {{#isContainer}}this.joinToString(separator = collectionDelimiter("{{collectionFormat}}")){{/isContainer}}{{^isContainer}}this.toString(){{/isContainer}} }
+        {{{paramName}}}{{^required}}?{{/required}}.apply { localVariableHeaders["{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"] = {{#isContainer}}this.joinToString(separator = collectionDelimiter("{{collectionFormat}}")){{/isContainer}}{{^isContainer}}this.toString(){{/isContainer}} }
         {{/headerParams}}
         {{^hasFormParams}}{{#hasConsumes}}{{#consumes}}localVariableHeaders["Content-Type"] = "{{{mediaType}}}"
         {{/consumes}}{{/hasConsumes}}{{/hasFormParams}}{{#hasProduces}}localVariableHeaders["Accept"] = "{{#produces}}{{{mediaType}}}{{^-last}}, {{/-last}}{{/produces}}"
@@ -225,7 +225,7 @@ import {{packageName}}.infrastructure.toMultiValue
 
         return RequestConfig(
             method = RequestMethod.{{httpMethod}},
-            path = "{{path}}"{{#pathParams}}.replace("{"+"{{baseName}}"+"}", encodeURIComponent({{#isContainer}}{{paramName}}.joinToString(","){{/isContainer}}{{^isContainer}}{{{paramName}}}{{#isEnum}}.value{{/isEnum}}.toString(){{/isContainer}})){{/pathParams}},
+            path = "{{path}}"{{#pathParams}}.replace("{"+"{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"+"}", encodeURIComponent({{#isContainer}}{{paramName}}.joinToString(","){{/isContainer}}{{^isContainer}}{{{paramName}}}{{#isEnum}}.value{{/isEnum}}.toString(){{/isContainer}})){{/pathParams}},
             query = localVariableQuery,
             headers = localVariableHeaders,
             requiresAuthentication = {{#hasAuthMethods}}true{{/hasAuthMethods}}{{^hasAuthMethods}}false{{/hasAuthMethods}},
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/cookieParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/cookieParams.mustache
index 2a933154fc8..40648eb494d 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/cookieParams.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/cookieParams.mustache
@@ -1 +1 @@
-{{#isCookieParam}}@CookieParam("{{baseName}}"){{#useBeanValidation}}{{>beanValidationQueryParams}}{{/useBeanValidation}}{{^isContainer}}{{#defaultValue}} @DefaultValue({{{.}}}){{/defaultValue}}{{/isContainer}} {{#useSwaggerAnnotations}}{{#description}} @ApiParam("{{.}}"){{/description}}{{/useSwaggerAnnotations}} {{paramName}}: {{{dataType}}}{{#isNullable}}?{{/isNullable}}{{^isNullable}}{{^defaultValue}}{{^required}}?{{/required}}{{/defaultValue}}{{/isNullable}}{{/isCookieParam}}
\ No newline at end of file
+{{#isCookieParam}}@CookieParam("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"){{#useBeanValidation}}{{>beanValidationQueryParams}}{{/useBeanValidation}}{{^isContainer}}{{#defaultValue}} @DefaultValue({{{.}}}){{/defaultValue}}{{/isContainer}} {{#useSwaggerAnnotations}}{{#description}} @ApiParam("{{.}}"){{/description}}{{/useSwaggerAnnotations}} {{paramName}}: {{{dataType}}}{{#isNullable}}?{{/isNullable}}{{^isNullable}}{{^defaultValue}}{{^required}}?{{/required}}{{/defaultValue}}{{/isNullable}}{{/isCookieParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/pathParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/pathParams.mustache
index 8148b70d6c2..b148f41beac 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/pathParams.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/pathParams.mustache
@@ -1 +1 @@
-{{#isPathParam}}@PathParam("{{baseName}}"){{#useBeanValidation}}{{>beanValidationPathParams}}{{/useBeanValidation}}{{#useSwaggerAnnotations}}{{#description}} @ApiParam("{{.}}"){{/description}}{{/useSwaggerAnnotations}} {{paramName}}: {{{dataType}}}{{#isNullable}}?{{/isNullable}}{{^isNullable}}{{^defaultValue}}{{^required}}?{{/required}}{{/defaultValue}}{{/isNullable}}{{/isPathParam}}
\ No newline at end of file
+{{#isPathParam}}@PathParam("{{#lambda.escapeDollar}}{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}{{/lambda.escapeDollar}}"){{#useBeanValidation}}{{>beanValidationPathParams}}{{/useBeanValidation}}{{#useSwaggerAnnotations}}{{#description}} @ApiParam("{{.}}"){{/description}}{{/useSwaggerAnnotations}} {{paramName}}: {{{dataType}}}{{#isNullable}}?{{/isNullable}}{{^isNullable}}{{^defaultValue}}{{^required}}?{{/required}}{{/defaultValue}}{{/isNullable}}{{/isPathParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/queryParams.mustache b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/queryParams.mustache
index d6468ba1d7c..fa6f1c583cb 100644
--- a/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/queryParams.mustache
+++ b/modules/openapi-generator/src/main/resources/kotlin-server/libraries/jaxrs-spec/queryParams.mustache
@@ -1 +1 @@
-{{#isQueryParam}}@QueryParam("{{baseName}}"){{#useBeanValidation}}{{>beanValidationQueryParams}}{{/useBeanValidation}}{{^isContainer}}{{#defaultValue}} @DefaultValue({{{.}}}){{/defaultValue}}{{/isContainer}} {{#useSwaggerAnnotations}}{{#description}} @ApiParam("{{.}}"){{/description}}{{/useSwaggerAnnotations}}  {{paramName}}: {{{dataType}}}{{#isNullable}}?{{/isNullable}}{{^isNullable}}{{^defaultValue}}{{^required}}?{{/required}}{{/defaultValue}}{{/isNullable}}{{/isQueryParam}}
\ No newline at end of file
+{{#isQueryParam}}@QueryParam("{{#lambda.escapeDollar}}{{baseName}}{{/lambda.escapeDollar}}"){{#useBeanValidation}}{{>beanValidationQueryParams}}{{/useBeanValidation}}{{^isContainer}}{{#defaultValue}} @DefaultValue({{{.}}}){{/defaultValue}}{{/isContainer}} {{#useSwaggerAnnotations}}{{#description}} @ApiParam("{{.}}"){{/description}}{{/useSwaggerAnnotations}}  {{paramName}}: {{{dataType}}}{{#isNullable}}?{{/isNullable}}{{^isNullable}}{{^defaultValue}}{{^required}}?{{/required}}{{/defaultValue}}{{/isNullable}}{{/isQueryParam}}
\ No newline at end of file
diff --git a/modules/openapi-generator/src/test/resources/3_0/parameter-test-spec.yaml b/modules/openapi-generator/src/test/resources/3_0/parameter-test-spec.yaml
index 364f7f5da74..14d1b311ebf 100644
--- a/modules/openapi-generator/src/test/resources/3_0/parameter-test-spec.yaml
+++ b/modules/openapi-generator/src/test/resources/3_0/parameter-test-spec.yaml
@@ -69,6 +69,11 @@ paths:
           schema:
             nullable: true
             type: string
+        - name: $query-$dollar-sign
+          in: query
+          description: query parameter with dollar sign
+          schema:
+            type: string
       responses:
         '200':
           description: successful operation
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/.openapi-generator-ignore b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/.openapi-generator-ignore
new file mode 100644
index 00000000000..7484ee590a3
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/.openapi-generator-ignore
@@ -0,0 +1,23 @@
+# OpenAPI Generator Ignore
+# Generated by openapi-generator https://github.com/openapitools/openapi-generator
+
+# Use this file to prevent files from being overwritten by the generator.
+# The patterns follow closely to .gitignore or .dockerignore.
+
+# As an example, the C# client generator defines ApiClient.cs.
+# You can make changes and tell OpenAPI Generator to ignore just this file by uncommenting the following line:
+#ApiClient.cs
+
+# You can match any string of characters against a directory, file or extension with a single asterisk (*):
+#foo/*/qux
+# The above matches foo/bar/qux and foo/baz/qux, but not foo/bar/baz/qux
+
+# You can recursively match patterns against a directory, file or extension with a double asterisk (**):
+#foo/**/qux
+# This matches foo/bar/qux, foo/baz/qux, and foo/bar/baz/qux
+
+# You can also negate patterns with an exclamation (!).
+# For example, you can ignore all files in a docs folder with the file extension .md:
+#docs/*.md
+# Then explicitly reverse the ignore rule for a single file:
+#!docs/README.md
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/.openapi-generator/FILES b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/.openapi-generator/FILES
new file mode 100644
index 00000000000..2d00928eb93
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/.openapi-generator/FILES
@@ -0,0 +1,26 @@
+README.md
+build.gradle
+docs/DefaultApi.md
+gradle/wrapper/gradle-wrapper.jar
+gradle/wrapper/gradle-wrapper.properties
+gradlew
+gradlew.bat
+settings.gradle
+src/main/kotlin/org/openapitools/client/apis/DefaultApi.kt
+src/main/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt
+src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
+src/main/kotlin/org/openapitools/client/infrastructure/ApiResponse.kt
+src/main/kotlin/org/openapitools/client/infrastructure/BigDecimalAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/BigIntegerAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/ByteArrayAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/Errors.kt
+src/main/kotlin/org/openapitools/client/infrastructure/LocalDateAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/LocalDateTimeAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/OffsetDateTimeAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/PartConfig.kt
+src/main/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt
+src/main/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt
+src/main/kotlin/org/openapitools/client/infrastructure/ResponseExtensions.kt
+src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
+src/main/kotlin/org/openapitools/client/infrastructure/URIAdapter.kt
+src/main/kotlin/org/openapitools/client/infrastructure/UUIDAdapter.kt
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/.openapi-generator/VERSION b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/.openapi-generator/VERSION
new file mode 100644
index 00000000000..757e6740040
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/.openapi-generator/VERSION
@@ -0,0 +1 @@
+7.0.0-SNAPSHOT
\ No newline at end of file
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/README.md b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/README.md
new file mode 100644
index 00000000000..c4906ffcafd
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/README.md
@@ -0,0 +1,59 @@
+# org.openapitools.client - Kotlin client library for Test parameters
+
+test parameters
+
+## Overview
+This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.  By using the [openapi-spec](https://github.com/OAI/OpenAPI-Specification) from a remote server, you can easily generate an API client.
+
+- API version: 1.0.0
+- Package version: 
+- Build package: org.openapitools.codegen.languages.KotlinClientCodegen
+
+## Requires
+
+* Kotlin 1.7.21
+* Gradle 7.5
+
+## Build
+
+First, create the gradle wrapper script:
+
+```
+gradle wrapper
+```
+
+Then, run:
+
+```
+./gradlew check assemble
+```
+
+This runs all tests and packages the library.
+
+## Features/Implementation Notes
+
+* Supports JSON inputs/outputs, File inputs, and Form inputs.
+* Supports collection formats for query parameters: csv, tsv, ssv, pipes.
+* Some Kotlin and Java types are fully qualified to avoid conflicts with types defined in OpenAPI definitions.
+* Implementation of ApiClient is intended to reduce method counts, specifically to benefit Android targets.
+
+<a id="documentation-for-api-endpoints"></a>
+## Documentation for API Endpoints
+
+All URIs are relative to *http://localhost*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*DefaultApi* | [**findPetsByStatus**](docs/DefaultApi.md#findpetsbystatus) | **GET** /test/parameters/{path_default}/{path_nullable} | Finds Pets by status
+
+
+<a id="documentation-for-models"></a>
+## Documentation for Models
+
+
+
+<a id="documentation-for-authorization"></a>
+## Documentation for Authorization
+
+Endpoints do not require authorization.
+
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build.gradle b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build.gradle
new file mode 100644
index 00000000000..66a3c68b890
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build.gradle
@@ -0,0 +1,38 @@
+group 'org.openapitools'
+version '1.0.0'
+
+wrapper {
+    gradleVersion = '7.5'
+    distributionUrl = "https://services.gradle.org/distributions/gradle-$gradleVersion-all.zip"
+}
+
+buildscript {
+    ext.kotlin_version = '1.7.21'
+
+    repositories {
+        maven { url "https://repo1.maven.org/maven2" }
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+apply plugin: 'kotlin'
+apply plugin: 'maven-publish'
+
+repositories {
+    maven { url "https://repo1.maven.org/maven2" }
+}
+
+test {
+    useJUnitPlatform()
+}
+
+dependencies {
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    implementation "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
+    implementation "com.squareup.moshi:moshi-kotlin:1.13.0"
+    implementation "com.squareup.moshi:moshi-adapters:1.13.0"
+    implementation "com.squareup.okhttp3:okhttp:4.10.0"
+    testImplementation "io.kotlintest:kotlintest-runner-junit5:3.4.2"
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/META-INF/kotlin-petstore-okhttp4-parameter-tests.kotlin_module b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/META-INF/kotlin-petstore-okhttp4-parameter-tests.kotlin_module
new file mode 100644
index 00000000000..95a2a402417
Binary files /dev/null and b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/META-INF/kotlin-petstore-okhttp4-parameter-tests.kotlin_module differ
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/apis/DefaultApi$Companion$defaultBasePath$2.class b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/apis/DefaultApi$Companion$defaultBasePath$2.class
new file mode 100644
index 00000000000..5e7a0ef0727
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diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/kotlin/kotlinpetstoreokhttp4parametertests100jar-classes.txt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/kotlin/kotlinpetstoreokhttp4parametertests100jar-classes.txt
new file mode 100644
index 00000000000..a1bcd4130cf
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/kotlin/kotlinpetstoreokhttp4parametertests100jar-classes.txt
@@ -0,0 +1 @@
+/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/apis/DefaultApi$Companion$defaultBasePath$2.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/apis/DefaultApi$Companion.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/apis/DefaultApi$WhenMappings.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/apis/DefaultApi.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ApiAbstractionsKt$defaultMultiValueConverter$1.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ApiAbstractionsKt.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ApiClient$Companion$defaultClient$2.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ApiClient$Companion.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ApiClient$WhenMappings.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ApiClient.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ApiResponse.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/BigDecimalAdapter.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/BigIntegerAdapter.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ByteArrayAdapter.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ClientError.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ClientException$Companion.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ClientException.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/Informational.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/LocalDateAdapter.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/LocalDateTimeAdapter.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/OffsetDateTimeAdapter.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/PartConfig.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/Redirection.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/RequestConfig.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/RequestMethod.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/Response.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ResponseExtensionsKt.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ResponseType.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/Serializer$moshi$2.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/Serializer.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ServerError.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ServerException$Companion.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/ServerException.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/Success.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/URIAdapter.class:/Users/williamcheng/Code/openapi-generator7/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/classes/kotlin/main/org/openapitools/client/infrastructure/UUIDAdapter.class
\ No newline at end of file
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/libs/kotlin-petstore-okhttp4-parameter-tests-1.0.0.jar b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/libs/kotlin-petstore-okhttp4-parameter-tests-1.0.0.jar
new file mode 100644
index 00000000000..a396294a394
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diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/tmp/jar/MANIFEST.MF b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/tmp/jar/MANIFEST.MF
new file mode 100644
index 00000000000..59499bce4a2
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/build/tmp/jar/MANIFEST.MF
@@ -0,0 +1,2 @@
+Manifest-Version: 1.0
+
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/docs/DefaultApi.md b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/docs/DefaultApi.md
new file mode 100644
index 00000000000..9082c6dd97d
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/docs/DefaultApi.md
@@ -0,0 +1,71 @@
+# DefaultApi
+
+All URIs are relative to *http://localhost*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**findPetsByStatus**](DefaultApi.md#findPetsByStatus) | **GET** /test/parameters/{path_default}/{path_nullable} | Finds Pets by status
+
+
+<a id="findPetsByStatus"></a>
+# **findPetsByStatus**
+> findPetsByStatus(pathDefault, pathNullable, queryDefault, headerDefault, cookieDefault, queryNullable, headerNullable, cookieNullable, dollarQueryDollarDollarSign)
+
+Finds Pets by status
+
+Multiple status values can be provided with comma separated strings
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = DefaultApi()
+val pathDefault : kotlin.String = pathDefault_example // kotlin.String | path default
+val pathNullable : kotlin.String = pathNullable_example // kotlin.String | path_nullable
+val queryDefault : kotlin.String = queryDefault_example // kotlin.String | query default
+val headerDefault : kotlin.String = headerDefault_example // kotlin.String | header default
+val cookieDefault : kotlin.String = cookieDefault_example // kotlin.String | cookie default
+val queryNullable : kotlin.String = queryNullable_example // kotlin.String | query nullable
+val headerNullable : kotlin.String = headerNullable_example // kotlin.String | header nullable
+val cookieNullable : kotlin.String = cookieNullable_example // kotlin.String | cookie_nullable
+val dollarQueryDollarDollarSign : kotlin.String = dollarQueryDollarDollarSign_example // kotlin.String | query parameter with dollar sign
+try {
+    apiInstance.findPetsByStatus(pathDefault, pathNullable, queryDefault, headerDefault, cookieDefault, queryNullable, headerNullable, cookieNullable, dollarQueryDollarDollarSign)
+} catch (e: ClientException) {
+    println("4xx response calling DefaultApi#findPetsByStatus")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling DefaultApi#findPetsByStatus")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **pathDefault** | **kotlin.String**| path default |
+ **pathNullable** | **kotlin.String**| path_nullable |
+ **queryDefault** | **kotlin.String**| query default | [optional] [default to &quot;available&quot;]
+ **headerDefault** | **kotlin.String**| header default | [optional] [default to &quot;available&quot;]
+ **cookieDefault** | **kotlin.String**| cookie default | [optional] [default to &quot;available&quot;]
+ **queryNullable** | **kotlin.String**| query nullable | [optional]
+ **headerNullable** | **kotlin.String**| header nullable | [optional]
+ **cookieNullable** | **kotlin.String**| cookie_nullable | [optional]
+ **dollarQueryDollarDollarSign** | **kotlin.String**| query parameter with dollar sign | [optional]
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradle/wrapper/gradle-wrapper.jar b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 00000000000..c1962a79e29
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diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradle/wrapper/gradle-wrapper.properties b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 00000000000..8707e8b5067
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.1.1-all.zip
+networkTimeout=10000
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradlew b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradlew
new file mode 100644
index 00000000000..aeb74cbb43e
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradlew
@@ -0,0 +1,245 @@
+#!/bin/sh
+
+#
+# Copyright © 2015-2021 the original authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+#
+#   Gradle start up script for POSIX generated by Gradle.
+#
+#   Important for running:
+#
+#   (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
+#       noncompliant, but you have some other compliant shell such as ksh or
+#       bash, then to run this script, type that shell name before the whole
+#       command line, like:
+#
+#           ksh Gradle
+#
+#       Busybox and similar reduced shells will NOT work, because this script
+#       requires all of these POSIX shell features:
+#         * functions;
+#         * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
+#           «${var#prefix}», «${var%suffix}», and «$( cmd )»;
+#         * compound commands having a testable exit status, especially «case»;
+#         * various built-in commands including «command», «set», and «ulimit».
+#
+#   Important for patching:
+#
+#   (2) This script targets any POSIX shell, so it avoids extensions provided
+#       by Bash, Ksh, etc; in particular arrays are avoided.
+#
+#       The "traditional" practice of packing multiple parameters into a
+#       space-separated string is a well documented source of bugs and security
+#       problems, so this is (mostly) avoided, by progressively accumulating
+#       options in "$@", and eventually passing that to Java.
+#
+#       Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
+#       and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
+#       see the in-line comments for details.
+#
+#       There are tweaks for specific operating systems such as AIX, CygWin,
+#       Darwin, MinGW, and NonStop.
+#
+#   (3) This script is generated from the Groovy template
+#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       within the Gradle project.
+#
+#       You can find Gradle at https://github.com/gradle/gradle/.
+#
+##############################################################################
+
+# Attempt to set APP_HOME
+
+# Resolve links: $0 may be a link
+app_path=$0
+
+# Need this for daisy-chained symlinks.
+while
+    APP_HOME=${app_path%"${app_path##*/}"}  # leaves a trailing /; empty if no leading path
+    [ -h "$app_path" ]
+do
+    ls=$( ls -ld "$app_path" )
+    link=${ls#*' -> '}
+    case $link in             #(
+      /*)   app_path=$link ;; #(
+      *)    app_path=$APP_HOME$link ;;
+    esac
+done
+
+# This is normally unused
+# shellcheck disable=SC2034
+APP_BASE_NAME=${0##*/}
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&2
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+} >&2
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "$( uname )" in                #(
+  CYGWIN* )         cygwin=true  ;; #(
+  Darwin* )         darwin=true  ;; #(
+  MSYS* | MINGW* )  msys=true    ;; #(
+  NONSTOP* )        nonstop=true ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD=$JAVA_HOME/jre/sh/java
+    else
+        JAVACMD=$JAVA_HOME/bin/java
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC3045
+        ulimit -n "$MAX_FD" ||
+            warn "Could not set maximum file descriptor limit to $MAX_FD"
+    esac
+fi
+
+# Collect all arguments for the java command, stacking in reverse order:
+#   * args from the command line
+#   * the main class name
+#   * -classpath
+#   * -D...appname settings
+#   * --module-path (only if needed)
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if "$cygwin" || "$msys" ; then
+    APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
+    CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
+
+    JAVACMD=$( cygpath --unix "$JAVACMD" )
+
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    for arg do
+        if
+            case $arg in                                #(
+              -*)   false ;;                            # don't mess with options #(
+              /?*)  t=${arg#/} t=/${t%%/*}              # looks like a POSIX filepath
+                    [ -e "$t" ] ;;                      #(
+              *)    false ;;
+            esac
+        then
+            arg=$( cygpath --path --ignore --mixed "$arg" )
+        fi
+        # Roll the args list around exactly as many times as the number of
+        # args, so each arg winds up back in the position where it started, but
+        # possibly modified.
+        #
+        # NB: a `for` loop captures its iteration list before it begins, so
+        # changing the positional parameters here affects neither the number of
+        # iterations, nor the values presented in `arg`.
+        shift                   # remove old arg
+        set -- "$@" "$arg"      # push replacement arg
+    done
+fi
+
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
+# Use "xargs" to parse quoted args.
+#
+# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
+#
+# In Bash we could simply go:
+#
+#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
+#   set -- "${ARGS[@]}" "$@"
+#
+# but POSIX shell has neither arrays nor command substitution, so instead we
+# post-process each arg (as a line of input to sed) to backslash-escape any
+# character that might be a shell metacharacter, then use eval to reverse
+# that process (while maintaining the separation between arguments), and wrap
+# the whole thing up as a single "set" statement.
+#
+# This will of course break if any of these variables contains a newline or
+# an unmatched quote.
+#
+
+eval "set -- $(
+        printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
+        xargs -n1 |
+        sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
+        tr '\n' ' '
+    )" '"$@"'
+
+exec "$JAVACMD" "$@"
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradlew.bat b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradlew.bat
new file mode 100644
index 00000000000..93e3f59f135
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/gradlew.bat
@@ -0,0 +1,92 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%"=="" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if %ERRORLEVEL% equ 0 goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if %ERRORLEVEL% equ 0 goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/settings.gradle b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/settings.gradle
new file mode 100644
index 00000000000..0e6aed9e795
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/settings.gradle
@@ -0,0 +1,2 @@
+
+rootProject.name = 'kotlin-petstore-okhttp4-parameter-tests'
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/apis/DefaultApi.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/apis/DefaultApi.kt
new file mode 100644
index 00000000000..3d2b94aa15b
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/apis/DefaultApi.kt
@@ -0,0 +1,155 @@
+/**
+ *
+ * Please note:
+ * This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * Do not edit this file manually.
+ *
+ */
+
+@file:Suppress(
+    "ArrayInDataClass",
+    "EnumEntryName",
+    "RemoveRedundantQualifierName",
+    "UnusedImport"
+)
+
+package org.openapitools.client.apis
+
+import java.io.IOException
+import okhttp3.OkHttpClient
+import okhttp3.HttpUrl
+
+
+import com.squareup.moshi.Json
+
+import org.openapitools.client.infrastructure.ApiClient
+import org.openapitools.client.infrastructure.ApiResponse
+import org.openapitools.client.infrastructure.ClientException
+import org.openapitools.client.infrastructure.ClientError
+import org.openapitools.client.infrastructure.ServerException
+import org.openapitools.client.infrastructure.ServerError
+import org.openapitools.client.infrastructure.MultiValueMap
+import org.openapitools.client.infrastructure.PartConfig
+import org.openapitools.client.infrastructure.RequestConfig
+import org.openapitools.client.infrastructure.RequestMethod
+import org.openapitools.client.infrastructure.ResponseType
+import org.openapitools.client.infrastructure.Success
+import org.openapitools.client.infrastructure.toMultiValue
+
+class DefaultApi(basePath: kotlin.String = defaultBasePath, client: OkHttpClient = ApiClient.defaultClient) : ApiClient(basePath, client) {
+    companion object {
+        @JvmStatic
+        val defaultBasePath: String by lazy {
+            System.getProperties().getProperty(ApiClient.baseUrlKey, "http://localhost")
+        }
+    }
+
+    /**
+     * Finds Pets by status
+     * Multiple status values can be provided with comma separated strings
+     * @param pathDefault path default
+     * @param pathNullable path_nullable
+     * @param queryDefault query default (optional, default to "available")
+     * @param headerDefault header default (optional, default to "available")
+     * @param cookieDefault cookie default (optional, default to "available")
+     * @param queryNullable query nullable (optional)
+     * @param headerNullable header nullable (optional)
+     * @param cookieNullable cookie_nullable (optional)
+     * @param dollarQueryDollarDollarSign query parameter with dollar sign (optional)
+     * @return void
+     * @throws IllegalStateException If the request is not correctly configured
+     * @throws IOException Rethrows the OkHttp execute method exception
+     * @throws UnsupportedOperationException If the API returns an informational or redirection response
+     * @throws ClientException If the API returns a client error response
+     * @throws ServerException If the API returns a server error response
+     */
+    @Throws(IllegalStateException::class, IOException::class, UnsupportedOperationException::class, ClientException::class, ServerException::class)
+    fun findPetsByStatus(pathDefault: kotlin.String, pathNullable: kotlin.String, queryDefault: kotlin.String? = "available", headerDefault: kotlin.String? = "available", cookieDefault: kotlin.String? = "available", queryNullable: kotlin.String? = null, headerNullable: kotlin.String? = null, cookieNullable: kotlin.String? = null, dollarQueryDollarDollarSign: kotlin.String? = null) : Unit {
+        val localVarResponse = findPetsByStatusWithHttpInfo(pathDefault = pathDefault, pathNullable = pathNullable, queryDefault = queryDefault, headerDefault = headerDefault, cookieDefault = cookieDefault, queryNullable = queryNullable, headerNullable = headerNullable, cookieNullable = cookieNullable, dollarQueryDollarDollarSign = dollarQueryDollarDollarSign)
+
+        return when (localVarResponse.responseType) {
+            ResponseType.Success -> Unit
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> {
+                val localVarError = localVarResponse as ClientError<*>
+                throw ClientException("Client error : ${localVarError.statusCode} ${localVarError.message.orEmpty()}", localVarError.statusCode, localVarResponse)
+            }
+            ResponseType.ServerError -> {
+                val localVarError = localVarResponse as ServerError<*>
+                throw ServerException("Server error : ${localVarError.statusCode} ${localVarError.message.orEmpty()}", localVarError.statusCode, localVarResponse)
+            }
+        }
+    }
+
+    /**
+     * Finds Pets by status
+     * Multiple status values can be provided with comma separated strings
+     * @param pathDefault path default
+     * @param pathNullable path_nullable
+     * @param queryDefault query default (optional, default to "available")
+     * @param headerDefault header default (optional, default to "available")
+     * @param cookieDefault cookie default (optional, default to "available")
+     * @param queryNullable query nullable (optional)
+     * @param headerNullable header nullable (optional)
+     * @param cookieNullable cookie_nullable (optional)
+     * @param dollarQueryDollarDollarSign query parameter with dollar sign (optional)
+     * @return ApiResponse<Unit?>
+     * @throws IllegalStateException If the request is not correctly configured
+     * @throws IOException Rethrows the OkHttp execute method exception
+     */
+    @Throws(IllegalStateException::class, IOException::class)
+    fun findPetsByStatusWithHttpInfo(pathDefault: kotlin.String, pathNullable: kotlin.String, queryDefault: kotlin.String?, headerDefault: kotlin.String?, cookieDefault: kotlin.String?, queryNullable: kotlin.String?, headerNullable: kotlin.String?, cookieNullable: kotlin.String?, dollarQueryDollarDollarSign: kotlin.String?) : ApiResponse<Unit?> {
+        val localVariableConfig = findPetsByStatusRequestConfig(pathDefault = pathDefault, pathNullable = pathNullable, queryDefault = queryDefault, headerDefault = headerDefault, cookieDefault = cookieDefault, queryNullable = queryNullable, headerNullable = headerNullable, cookieNullable = cookieNullable, dollarQueryDollarDollarSign = dollarQueryDollarDollarSign)
+
+        return request<Unit, Unit>(
+            localVariableConfig
+        )
+    }
+
+    /**
+     * To obtain the request config of the operation findPetsByStatus
+     *
+     * @param pathDefault path default
+     * @param pathNullable path_nullable
+     * @param queryDefault query default (optional, default to "available")
+     * @param headerDefault header default (optional, default to "available")
+     * @param cookieDefault cookie default (optional, default to "available")
+     * @param queryNullable query nullable (optional)
+     * @param headerNullable header nullable (optional)
+     * @param cookieNullable cookie_nullable (optional)
+     * @param dollarQueryDollarDollarSign query parameter with dollar sign (optional)
+     * @return RequestConfig
+     */
+    fun findPetsByStatusRequestConfig(pathDefault: kotlin.String, pathNullable: kotlin.String, queryDefault: kotlin.String?, headerDefault: kotlin.String?, cookieDefault: kotlin.String?, queryNullable: kotlin.String?, headerNullable: kotlin.String?, cookieNullable: kotlin.String?, dollarQueryDollarDollarSign: kotlin.String?) : RequestConfig<Unit> {
+        val localVariableBody = null
+        val localVariableQuery: MultiValueMap = mutableMapOf<kotlin.String, kotlin.collections.List<kotlin.String>>()
+            .apply {
+                if (queryDefault != null) {
+                    put("query_default", listOf(queryDefault.toString()))
+                }
+                if (queryNullable != null) {
+                    put("query_nullable", listOf(queryNullable.toString()))
+                }
+                if (dollarQueryDollarDollarSign != null) {
+                    put("\$query-\$dollar-sign", listOf(dollarQueryDollarDollarSign.toString()))
+                }
+            }
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        headerDefault?.apply { localVariableHeaders["header_default"] = this.toString() }
+        headerNullable?.apply { localVariableHeaders["header_nullable"] = this.toString() }
+        
+        return RequestConfig(
+            method = RequestMethod.GET,
+            path = "/test/parameters/{path_default}/{path_nullable}".replace("{"+"path_default"+"}", encodeURIComponent(pathDefault.toString())).replace("{"+"path_nullable"+"}", encodeURIComponent(pathNullable.toString())),
+            query = localVariableQuery,
+            headers = localVariableHeaders,
+            requiresAuthentication = false,
+            body = localVariableBody
+        )
+    }
+
+
+    private fun encodeURIComponent(uriComponent: kotlin.String): kotlin.String =
+        HttpUrl.Builder().scheme("http").host("localhost").addPathSegment(uriComponent).build().encodedPathSegments[0]
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt
new file mode 100644
index 00000000000..a4a4491eac0
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ApiAbstractions.kt
@@ -0,0 +1,23 @@
+package org.openapitools.client.infrastructure
+
+typealias MultiValueMap = MutableMap<String,List<String>>
+
+fun collectionDelimiter(collectionFormat: String) = when(collectionFormat) {
+    "csv" -> ","
+    "tsv" -> "\t"
+    "pipe" -> "|"
+    "space" -> " "
+    else -> ""
+}
+
+val defaultMultiValueConverter: (item: Any?) -> String = { item -> "$item" }
+
+fun <T : Any?> toMultiValue(items: Array<T>, collectionFormat: String, map: (item: T) -> String = defaultMultiValueConverter)
+        = toMultiValue(items.asIterable(), collectionFormat, map)
+
+fun <T : Any?> toMultiValue(items: Iterable<T>, collectionFormat: String, map: (item: T) -> String = defaultMultiValueConverter): List<String> {
+    return when(collectionFormat) {
+        "multi" -> items.map(map)
+        else -> listOf(items.joinToString(separator = collectionDelimiter(collectionFormat), transform = map))
+    }
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
new file mode 100644
index 00000000000..ea4b7b65935
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ApiClient.kt
@@ -0,0 +1,245 @@
+package org.openapitools.client.infrastructure
+
+import okhttp3.OkHttpClient
+import okhttp3.RequestBody
+import okhttp3.RequestBody.Companion.asRequestBody
+import okhttp3.RequestBody.Companion.toRequestBody
+import okhttp3.FormBody
+import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
+import okhttp3.ResponseBody
+import okhttp3.MediaType.Companion.toMediaTypeOrNull
+import okhttp3.Request
+import okhttp3.Headers
+import okhttp3.Headers.Companion.toHeaders
+import okhttp3.MultipartBody
+import okhttp3.Call
+import okhttp3.Callback
+import okhttp3.Response
+import okhttp3.internal.EMPTY_REQUEST
+import java.io.BufferedWriter
+import java.io.File
+import java.io.FileWriter
+import java.io.IOException
+import java.net.URLConnection
+import java.time.LocalDate
+import java.time.LocalDateTime
+import java.time.LocalTime
+import java.time.OffsetDateTime
+import java.time.OffsetTime
+import java.util.Locale
+import com.squareup.moshi.adapter
+
+open class ApiClient(val baseUrl: String, val client: OkHttpClient = defaultClient) {
+    companion object {
+        protected const val ContentType = "Content-Type"
+        protected const val Accept = "Accept"
+        protected const val Authorization = "Authorization"
+        protected const val JsonMediaType = "application/json"
+        protected const val FormDataMediaType = "multipart/form-data"
+        protected const val FormUrlEncMediaType = "application/x-www-form-urlencoded"
+        protected const val XmlMediaType = "application/xml"
+
+        val apiKey: MutableMap<String, String> = mutableMapOf()
+        val apiKeyPrefix: MutableMap<String, String> = mutableMapOf()
+        var username: String? = null
+        var password: String? = null
+        var accessToken: String? = null
+        const val baseUrlKey = "org.openapitools.client.baseUrl"
+
+        @JvmStatic
+        val defaultClient: OkHttpClient by lazy {
+            builder.build()
+        }
+
+        @JvmStatic
+        val builder: OkHttpClient.Builder = OkHttpClient.Builder()
+    }
+
+    /**
+     * Guess Content-Type header from the given file (defaults to "application/octet-stream").
+     *
+     * @param file The given file
+     * @return The guessed Content-Type
+     */
+    protected fun guessContentTypeFromFile(file: File): String {
+        val contentType = URLConnection.guessContentTypeFromName(file.name)
+        return contentType ?: "application/octet-stream"
+    }
+
+    protected inline fun <reified T> requestBody(content: T, mediaType: String?): RequestBody =
+        when {
+            content is File -> content.asRequestBody((mediaType ?: guessContentTypeFromFile(content)).toMediaTypeOrNull())
+            mediaType == FormDataMediaType ->
+                MultipartBody.Builder()
+                    .setType(MultipartBody.FORM)
+                    .apply {
+                        // content's type *must* be Map<String, PartConfig<*>>
+                        @Suppress("UNCHECKED_CAST")
+                        (content as Map<String, PartConfig<*>>).forEach { (name, part) ->
+                            if (part.body is File) {
+                                val partHeaders = part.headers.toMutableMap() +
+                                    ("Content-Disposition" to "form-data; name=\"$name\"; filename=\"${part.body.name}\"")
+                                val fileMediaType = guessContentTypeFromFile(part.body).toMediaTypeOrNull()
+                                addPart(
+                                    partHeaders.toHeaders(),
+                                    part.body.asRequestBody(fileMediaType)
+                                )
+                            } else {
+                                val partHeaders = part.headers.toMutableMap() +
+                                    ("Content-Disposition" to "form-data; name=\"$name\"")
+                                addPart(
+                                    partHeaders.toHeaders(),
+                                    parameterToString(part.body).toRequestBody(null)
+                                )
+                            }
+                        }
+                    }.build()
+            mediaType == FormUrlEncMediaType -> {
+                FormBody.Builder().apply {
+                    // content's type *must* be Map<String, PartConfig<*>>
+                    @Suppress("UNCHECKED_CAST")
+                    (content as Map<String, PartConfig<*>>).forEach { (name, part) ->
+                        add(name, parameterToString(part.body))
+                    }
+                }.build()
+            }
+            mediaType == null || mediaType.startsWith("application/") && mediaType.endsWith("json") ->
+                if (content == null) {
+                    EMPTY_REQUEST
+                } else {
+                    Serializer.moshi.adapter(T::class.java).toJson(content)
+                        .toRequestBody((mediaType ?: JsonMediaType).toMediaTypeOrNull())
+                }
+            mediaType == XmlMediaType -> throw UnsupportedOperationException("xml not currently supported.")
+            // TODO: this should be extended with other serializers
+            else -> throw UnsupportedOperationException("requestBody currently only supports JSON body and File body.")
+        }
+
+    @OptIn(ExperimentalStdlibApi::class)
+    protected inline fun <reified T: Any?> responseBody(body: ResponseBody?, mediaType: String? = JsonMediaType): T? {
+        if(body == null) {
+            return null
+        }
+        if (T::class.java == File::class.java) {
+            // return tempFile
+            // Attention: if you are developing an android app that supports API Level 25 and bellow, please check flag supportAndroidApiLevel25AndBelow in https://openapi-generator.tech/docs/generators/kotlin#config-options
+            val tempFile = java.nio.file.Files.createTempFile("tmp.org.openapitools.client", null).toFile()
+            tempFile.deleteOnExit()
+            body.byteStream().use { inputStream ->
+                tempFile.outputStream().use { tempFileOutputStream ->
+                    inputStream.copyTo(tempFileOutputStream)
+                }
+            }
+            return tempFile as T
+        }
+        val bodyContent = body.string()
+        if (bodyContent.isEmpty()) {
+            return null
+        }
+        return when {
+            mediaType==null || (mediaType.startsWith("application/") && mediaType.endsWith("json")) ->
+                Serializer.moshi.adapter<T>().fromJson(bodyContent)
+            else ->  throw UnsupportedOperationException("responseBody currently only supports JSON body.")
+        }
+    }
+
+
+    protected inline fun <reified I, reified T: Any?> request(requestConfig: RequestConfig<I>): ApiResponse<T?> {
+        val httpUrl = baseUrl.toHttpUrlOrNull() ?: throw IllegalStateException("baseUrl is invalid.")
+
+        val url = httpUrl.newBuilder()
+            .addEncodedPathSegments(requestConfig.path.trimStart('/'))
+            .apply {
+                requestConfig.query.forEach { query ->
+                    query.value.forEach { queryValue ->
+                        addQueryParameter(query.key, queryValue)
+                    }
+                }
+            }.build()
+
+        // take content-type/accept from spec or set to default (application/json) if not defined
+        if (requestConfig.body != null && requestConfig.headers[ContentType].isNullOrEmpty()) {
+            requestConfig.headers[ContentType] = JsonMediaType
+        }
+        if (requestConfig.headers[Accept].isNullOrEmpty()) {
+            requestConfig.headers[Accept] = JsonMediaType
+        }
+        val headers = requestConfig.headers
+
+        if (headers[Accept].isNullOrEmpty()) {
+            throw kotlin.IllegalStateException("Missing Accept header. This is required.")
+        }
+
+        val contentType = if (headers[ContentType] != null) {
+            // TODO: support multiple contentType options here.
+            (headers[ContentType] as String).substringBefore(";").lowercase(Locale.US)
+        } else {
+            null
+        }
+
+        val request = when (requestConfig.method) {
+            RequestMethod.DELETE -> Request.Builder().url(url).delete(requestBody(requestConfig.body, contentType))
+            RequestMethod.GET -> Request.Builder().url(url)
+            RequestMethod.HEAD -> Request.Builder().url(url).head()
+            RequestMethod.PATCH -> Request.Builder().url(url).patch(requestBody(requestConfig.body, contentType))
+            RequestMethod.PUT -> Request.Builder().url(url).put(requestBody(requestConfig.body, contentType))
+            RequestMethod.POST -> Request.Builder().url(url).post(requestBody(requestConfig.body, contentType))
+            RequestMethod.OPTIONS -> Request.Builder().url(url).method("OPTIONS", null)
+        }.apply {
+            headers.forEach { header -> addHeader(header.key, header.value) }
+        }.build()
+
+        val response = client.newCall(request).execute()
+
+        val accept = response.header(ContentType)?.substringBefore(";")?.lowercase(Locale.US)
+
+        // TODO: handle specific mapping types. e.g. Map<int, Class<?>>
+        return when {
+            response.isRedirect -> Redirection(
+                response.code,
+                response.headers.toMultimap()
+            )
+            response.isInformational -> Informational(
+                response.message,
+                response.code,
+                response.headers.toMultimap()
+            )
+            response.isSuccessful -> Success(
+                responseBody(response.body, accept),
+                response.code,
+                response.headers.toMultimap()
+            )
+            response.isClientError -> ClientError(
+                response.message,
+                response.body?.string(),
+                response.code,
+                response.headers.toMultimap()
+            )
+            else -> ServerError(
+                response.message,
+                response.body?.string(),
+                response.code,
+                response.headers.toMultimap()
+            )
+        }
+    }
+
+    protected fun parameterToString(value: Any?): String = when (value) {
+        null -> ""
+        is Array<*> -> toMultiValue(value, "csv").toString()
+        is Iterable<*> -> toMultiValue(value, "csv").toString()
+        is OffsetDateTime, is OffsetTime, is LocalDateTime, is LocalDate, is LocalTime ->
+            parseDateToQueryString(value)
+        else -> value.toString()
+    }
+
+    protected inline fun <reified T: Any> parseDateToQueryString(value : T): String {
+        /*
+        .replace("\"", "") converts the json object string to an actual string for the query parameter.
+        The moshi or gson adapter allows a more generic solution instead of trying to use a native
+        formatter. It also easily allows to provide a simple way to define a custom date format pattern
+        inside a gson/moshi adapter.
+        */
+        return Serializer.moshi.adapter(T::class.java).toJson(value).replace("\"", "")
+    }
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ApiResponse.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ApiResponse.kt
new file mode 100644
index 00000000000..cf2cfaa95d9
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ApiResponse.kt
@@ -0,0 +1,43 @@
+package org.openapitools.client.infrastructure
+
+enum class ResponseType {
+    Success, Informational, Redirection, ClientError, ServerError
+}
+
+interface Response
+
+abstract class ApiResponse<T>(val responseType: ResponseType): Response {
+    abstract val statusCode: Int
+    abstract val headers: Map<String,List<String>>
+}
+
+class Success<T>(
+    val data: T,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+): ApiResponse<T>(ResponseType.Success)
+
+class Informational<T>(
+    val statusText: String,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+) : ApiResponse<T>(ResponseType.Informational)
+
+class Redirection<T>(
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+) : ApiResponse<T>(ResponseType.Redirection)
+
+class ClientError<T>(
+    val message: String? = null,
+    val body: Any? = null,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+) : ApiResponse<T>(ResponseType.ClientError)
+
+class ServerError<T>(
+    val message: String? = null,
+    val body: Any? = null,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>>
+): ApiResponse<T>(ResponseType.ServerError)
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/BigDecimalAdapter.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/BigDecimalAdapter.kt
new file mode 100644
index 00000000000..064b57fc6b8
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/BigDecimalAdapter.kt
@@ -0,0 +1,17 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.math.BigDecimal
+
+class BigDecimalAdapter {
+    @ToJson
+    fun toJson(value: BigDecimal): String {
+        return value.toPlainString()
+    }
+
+    @FromJson
+    fun fromJson(value: String): BigDecimal {
+        return BigDecimal(value)
+    }
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/BigIntegerAdapter.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/BigIntegerAdapter.kt
new file mode 100644
index 00000000000..7df6057b450
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/BigIntegerAdapter.kt
@@ -0,0 +1,17 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.math.BigInteger
+
+class BigIntegerAdapter {
+    @ToJson
+    fun toJson(value: BigInteger): String {
+        return value.toString()
+    }
+
+    @FromJson
+    fun fromJson(value: String): BigInteger {
+        return BigInteger(value)
+    }
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ByteArrayAdapter.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ByteArrayAdapter.kt
new file mode 100644
index 00000000000..ff5e2a81ee8
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ByteArrayAdapter.kt
@@ -0,0 +1,12 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+
+class ByteArrayAdapter {
+    @ToJson
+    fun toJson(data: ByteArray): String = String(data)
+
+    @FromJson
+    fun fromJson(data: String): ByteArray = data.toByteArray()
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/Errors.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/Errors.kt
new file mode 100644
index 00000000000..c83993b9055
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/Errors.kt
@@ -0,0 +1,18 @@
+@file:Suppress("unused")
+package org.openapitools.client.infrastructure
+
+import java.lang.RuntimeException
+
+open class ClientException(message: kotlin.String? = null, val statusCode: Int = -1, val response: Response? = null) : RuntimeException(message) {
+
+    companion object {
+        private const val serialVersionUID: Long = 123L
+    }
+}
+
+open class ServerException(message: kotlin.String? = null, val statusCode: Int = -1, val response: Response? = null) : RuntimeException(message) {
+
+    companion object {
+        private const val serialVersionUID: Long = 456L
+    }
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateAdapter.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateAdapter.kt
new file mode 100644
index 00000000000..b2e1654479a
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateAdapter.kt
@@ -0,0 +1,19 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.time.LocalDate
+import java.time.format.DateTimeFormatter
+
+class LocalDateAdapter {
+    @ToJson
+    fun toJson(value: LocalDate): String {
+        return DateTimeFormatter.ISO_LOCAL_DATE.format(value)
+    }
+
+    @FromJson
+    fun fromJson(value: String): LocalDate {
+        return LocalDate.parse(value, DateTimeFormatter.ISO_LOCAL_DATE)
+    }
+
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateTimeAdapter.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateTimeAdapter.kt
new file mode 100644
index 00000000000..e082db94811
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/LocalDateTimeAdapter.kt
@@ -0,0 +1,19 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.time.LocalDateTime
+import java.time.format.DateTimeFormatter
+
+class LocalDateTimeAdapter {
+    @ToJson
+    fun toJson(value: LocalDateTime): String {
+        return DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(value)
+    }
+
+    @FromJson
+    fun fromJson(value: String): LocalDateTime {
+        return LocalDateTime.parse(value, DateTimeFormatter.ISO_LOCAL_DATE_TIME)
+    }
+
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/OffsetDateTimeAdapter.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/OffsetDateTimeAdapter.kt
new file mode 100644
index 00000000000..87437871a31
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/OffsetDateTimeAdapter.kt
@@ -0,0 +1,19 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.time.OffsetDateTime
+import java.time.format.DateTimeFormatter
+
+class OffsetDateTimeAdapter {
+    @ToJson
+    fun toJson(value: OffsetDateTime): String {
+        return DateTimeFormatter.ISO_OFFSET_DATE_TIME.format(value)
+    }
+
+    @FromJson
+    fun fromJson(value: String): OffsetDateTime {
+        return OffsetDateTime.parse(value, DateTimeFormatter.ISO_OFFSET_DATE_TIME)
+    }
+
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/PartConfig.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/PartConfig.kt
new file mode 100644
index 00000000000..be00e38fbae
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/PartConfig.kt
@@ -0,0 +1,11 @@
+package org.openapitools.client.infrastructure
+
+/**
+ * Defines a config object for a given part of a multi-part request.
+ * NOTE: Headers is a Map<String,String> because rfc2616 defines
+ *       multi-valued headers as csv-only.
+ */
+data class PartConfig<T>(
+    val headers: MutableMap<String, String> = mutableMapOf(),
+    val body: T? = null
+)
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt
new file mode 100644
index 00000000000..c3518a2d173
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/RequestConfig.kt
@@ -0,0 +1,18 @@
+package org.openapitools.client.infrastructure
+
+/**
+ * Defines a config object for a given request.
+ * NOTE: This object doesn't include 'body' because it
+ *       allows for caching of the constructed object
+ *       for many request definitions.
+ * NOTE: Headers is a Map<String,String> because rfc2616 defines
+ *       multi-valued headers as csv-only.
+ */
+data class RequestConfig<T>(
+    val method: RequestMethod,
+    val path: String,
+    val headers: MutableMap<String, String> = mutableMapOf(),
+    val query: MutableMap<String, List<String>> = mutableMapOf(),
+    val requiresAuthentication: Boolean,
+    val body: T? = null
+)
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt
new file mode 100644
index 00000000000..beb56f07cdd
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/RequestMethod.kt
@@ -0,0 +1,8 @@
+package org.openapitools.client.infrastructure
+
+/**
+ * Provides enumerated HTTP verbs
+ */
+enum class RequestMethod {
+    GET, DELETE, HEAD, OPTIONS, PATCH, POST, PUT
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ResponseExtensions.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ResponseExtensions.kt
new file mode 100644
index 00000000000..9bd2790dc14
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/ResponseExtensions.kt
@@ -0,0 +1,24 @@
+package org.openapitools.client.infrastructure
+
+import okhttp3.Response
+
+/**
+ * Provides an extension to evaluation whether the response is a 1xx code
+ */
+val Response.isInformational : Boolean get() = this.code in 100..199
+
+/**
+ * Provides an extension to evaluation whether the response is a 3xx code
+ */
+@Suppress("EXTENSION_SHADOWED_BY_MEMBER")
+val Response.isRedirect : Boolean get() = this.code in 300..399
+
+/**
+ * Provides an extension to evaluation whether the response is a 4xx code
+ */
+val Response.isClientError : Boolean get() = this.code in 400..499
+
+/**
+ * Provides an extension to evaluation whether the response is a 5xx (Standard) through 999 (non-standard) code
+ */
+val Response.isServerError : Boolean get() = this.code in 500..999
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
new file mode 100644
index 00000000000..e22592e47d7
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/Serializer.kt
@@ -0,0 +1,23 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
+
+object Serializer {
+    @JvmStatic
+    val moshiBuilder: Moshi.Builder = Moshi.Builder()
+        .add(OffsetDateTimeAdapter())
+        .add(LocalDateTimeAdapter())
+        .add(LocalDateAdapter())
+        .add(UUIDAdapter())
+        .add(ByteArrayAdapter())
+        .add(URIAdapter())
+        .add(KotlinJsonAdapterFactory())
+        .add(BigDecimalAdapter())
+        .add(BigIntegerAdapter())
+
+    @JvmStatic
+    val moshi: Moshi by lazy {
+        moshiBuilder.build()
+    }
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/URIAdapter.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/URIAdapter.kt
new file mode 100644
index 00000000000..927522757da
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/URIAdapter.kt
@@ -0,0 +1,13 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.net.URI
+
+class URIAdapter {
+    @ToJson
+    fun toJson(uri: URI) = uri.toString()
+
+    @FromJson
+    fun fromJson(s: String): URI = URI.create(s)
+}
diff --git a/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/UUIDAdapter.kt b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/UUIDAdapter.kt
new file mode 100644
index 00000000000..7ccf7dc25d2
--- /dev/null
+++ b/samples/client/others/kotlin-jvm-okhttp-parameter-tests/src/main/kotlin/org/openapitools/client/infrastructure/UUIDAdapter.kt
@@ -0,0 +1,13 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.FromJson
+import com.squareup.moshi.ToJson
+import java.util.UUID
+
+class UUIDAdapter {
+    @ToJson
+    fun toJson(uuid: UUID) = uuid.toString()
+
+    @FromJson
+    fun fromJson(s: String): UUID = UUID.fromString(s)
+}
diff --git a/samples/server/others/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/DefaultApi.kt b/samples/server/others/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/DefaultApi.kt
index c448f38e266..984bb8420d9 100644
--- a/samples/server/others/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/DefaultApi.kt
+++ b/samples/server/others/kotlin-server/jaxrs-spec/src/main/kotlin/org/openapitools/server/apis/DefaultApi.kt
@@ -14,7 +14,7 @@ import java.io.InputStream
 class DefaultApi {
 
     @GET
-    suspend fun findPetsByStatus(@PathParam("path_default") pathDefault: kotlin.String,@PathParam("path_nullable") pathNullable: kotlin.String,@QueryParam("query_default") @DefaultValue("available")   queryDefault: kotlin.String,@HeaderParam("header_default")  @DefaultValue("available")  headerDefault: kotlin.String,@CookieParam("cookie_default") @DefaultValue("available")  cookieDefault: kotlin.String,@QueryParam("query_nullable")   queryNullable: kotlin.String?,@HeaderParam("header_nullable")   headerNullable: kotlin.String?,@CookieParam("cookie_nullable")  cookieNullable: kotlin.String?): Response {
+    suspend fun findPetsByStatus(@PathParam("path_default") pathDefault: kotlin.String,@PathParam("path_nullable") pathNullable: kotlin.String,@QueryParam("query_default") @DefaultValue("available")   queryDefault: kotlin.String,@HeaderParam("header_default")  @DefaultValue("available")  headerDefault: kotlin.String,@CookieParam("cookie_default") @DefaultValue("available")  cookieDefault: kotlin.String,@QueryParam("query_nullable")   queryNullable: kotlin.String?,@HeaderParam("header_nullable")   headerNullable: kotlin.String?,@CookieParam("cookie_nullable")  cookieNullable: kotlin.String?,@QueryParam("\$query-\$dollar-sign")   dollarQueryDollarDollarSign: kotlin.String?): Response {
         return Response.ok().entity("magic!").build();
     }
 }