[kotlin] add option for non public api (#4089)

* [kotlin] add option for non public api

* [kotlin] update petstores

* [kotlin] add missing script to kotlin-client-all.sh

* [kotlin] update pet projects

* [kotlin] remove public modifier

* [kotlin-client] inline visibility modifier

bin/kotlin-client-all.sh

@@ -1,5 +1,6 @@
 #!/bin/sh
 
+./bin/kotlin-client-nonpublic.sh
 ./bin/kotlin-client-okhttp3.sh
 ./bin/kotlin-client-petstore-multiplatform.sh
 ./bin/kotlin-client-petstore.sh

bin/kotlin-client-nonpublic.sh

@@ -0,0 +1,34 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=$(ls -ld "$SCRIPT")
+  link=$(expr "$ls" : '.*-> \(.*\)$')
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=$(dirname "$SCRIPT")/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=$(dirname "$SCRIPT")/..
+  APP_DIR=$(cd "${APP_DIR}"; pwd)
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn -B clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="generate -t modules/openapi-generator/src/main/resources/kotlin-client -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g kotlin --artifact-id kotlin-petstore-nonpublic --additional-properties nonPublicApi=true -o samples/client/petstore/kotlin-nonpublic $@"
+
+java ${JAVA_OPTS} -jar ${executable} ${ags}
+
+cp CI/samples.ci/client/petstore/kotlin-string/pom.xml samples/client/petstore/kotlin-string/pom.xml

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractKotlinCodegen.java

@@ -60,6 +60,8 @@ public abstract class AbstractKotlinCodegen extends DefaultCodegen implements Co
     protected boolean serializableModel = false;
     protected boolean needsDataClassBody = false;
 
+    protected boolean nonPublicApi = false;
+
     protected CodegenConstants.ENUM_PROPERTY_NAMING_TYPE enumPropertyNaming = CodegenConstants.ENUM_PROPERTY_NAMING_TYPE.camelCase;
     protected SERIALIZATION_LIBRARY_TYPE serializationLibrary = SERIALIZATION_LIBRARY_TYPE.moshi;
 
@@ -442,6 +444,12 @@ public abstract class AbstractKotlinCodegen extends DefaultCodegen implements Co
             additionalProperties.put(CodegenConstants.PARCELIZE_MODELS, parcelizeModels);
         }
 
+        if (additionalProperties.containsKey(CodegenConstants.NON_PUBLIC_API)) {
+            this.setNonPublicApi(Boolean.valueOf((String) additionalProperties.get(CodegenConstants.NON_PUBLIC_API)));
+        } else {
+            additionalProperties.put(CodegenConstants.NON_PUBLIC_API, nonPublicApi);
+        }
+
         additionalProperties.put(CodegenConstants.API_PACKAGE, apiPackage());
         additionalProperties.put(CodegenConstants.MODEL_PACKAGE, modelPackage());
 
@@ -493,6 +501,14 @@ public abstract class AbstractKotlinCodegen extends DefaultCodegen implements Co
         this.serializableModel = serializableModel;
     }
     
+    public boolean nonPublicApi() {
+        return nonPublicApi;
+    }
+
+    public void setNonPublicApi(boolean nonPublicApi) {
+        this.nonPublicApi = nonPublicApi;
+    }
+
     public boolean isNeedsDataClassBody() {
         return needsDataClassBody;
     }

modules/openapi-generator/src/main/resources/kotlin-client/api.mustache

@@ -17,7 +17,7 @@ import {{packageName}}.infrastructure.Success
 import {{packageName}}.infrastructure.toMultiValue
 
 {{#operations}}
-class {{classname}}(basePath: kotlin.String = "{{{basePath}}}") : ApiClient(basePath) {
+{{#nonPublicApi}}internal {{/nonPublicApi}}class {{classname}}(basePath: kotlin.String = "{{{basePath}}}") : ApiClient(basePath) {
 
     {{#operation}}
     /**

modules/openapi-generator/src/main/resources/kotlin-client/data_class.mustache

@@ -28,7 +28,7 @@ import java.io.Serializable
 @Parcelize
 {{/parcelizeModels}}
 {{#multiplatform}}@Serializable{{/multiplatform}}
-data class {{classname}} (
+{{#nonPublicApi}}internal {{/nonPublicApi}}data class {{classname}} (
 {{#requiredVars}}
 {{>data_class_req_var}}{{^-last}},
 {{/-last}}{{/requiredVars}}{{#hasRequired}}{{#hasOptional}},
@@ -41,7 +41,7 @@ data class {{classname}} (
 {
 {{/vendorExtensions.x-has-data-class-body}}
 {{#serializableModel}}
-	companion object {
+	{{#nonPublicApi}}internal {{/nonPublicApi}}companion object {
 		private const val serialVersionUID: Long = 123
 	}
 {{/serializableModel}}
@@ -53,7 +53,7 @@ data class {{classname}} (
     * Values: {{#allowableValues}}{{#enumVars}}{{&name}}{{^-last}},{{/-last}}{{/enumVars}}{{/allowableValues}}
     */
     {{#multiplatform}}@Serializable(with = {{nameInCamelCase}}.Serializer::class){{/multiplatform}}
-    enum class {{{nameInCamelCase}}}(val value: {{#isListContainer}}{{{ nestedType }}}{{/isListContainer}}{{^isListContainer}}{{{dataType}}}{{/isListContainer}}){
+    {{#nonPublicApi}}internal {{/nonPublicApi}}enum class {{{nameInCamelCase}}}(val value: {{#isListContainer}}{{{ nestedType }}}{{/isListContainer}}{{^isListContainer}}{{{dataType}}}{{/isListContainer}}){
     {{#allowableValues}}
     {{#enumVars}}
         {{#jvm}}
@@ -71,7 +71,7 @@ data class {{classname}} (
     {{/allowableValues}}
     {{#multiplatform}}
 
-        object Serializer : CommonEnumSerializer<{{nameInCamelCase}}>("{{nameInCamelCase}}", values(), values().map { it.value }.toTypedArray())
+        {{#nonPublicApi}}internal {{/nonPublicApi}}object Serializer : CommonEnumSerializer<{{nameInCamelCase}}>("{{nameInCamelCase}}", values(), values().map { it.value }.toTypedArray())
     {{/multiplatform}}
     }
 {{/isEnum}}

modules/openapi-generator/src/main/resources/kotlin-client/enum_class.mustache

@@ -16,7 +16,7 @@ import kotlinx.serialization.internal.CommonEnumSerializer
 * Values: {{#allowableValues}}{{#enumVars}}{{&name}}{{^-last}},{{/-last}}{{/enumVars}}{{/allowableValues}}
 */
 {{#multiplatform}}@Serializable(with = {{classname}}.Serializer::class){{/multiplatform}}
-enum class {{classname}}(val value: {{{dataType}}}){
+{{#nonPublicApi}}internal {{/nonPublicApi}}enum class {{classname}}(val value: {{{dataType}}}){
 
 {{#allowableValues}}{{#enumVars}}
     {{#jvm}}
@@ -42,6 +42,6 @@ enum class {{classname}}(val value: {{{dataType}}}){
 {{/enumVars}}{{/allowableValues}}
 
 {{#multiplatform}}
-    object Serializer : CommonEnumSerializer<{{classname}}>("{{classname}}", values(), values().map { it.value }.toTypedArray())
+    {{#nonPublicApi}}internal {{/nonPublicApi}}object Serializer : CommonEnumSerializer<{{classname}}>("{{classname}}", values(), values().map { it.value }.toTypedArray())
 {{/multiplatform}}
 }

modules/openapi-generator/src/main/resources/kotlin-client/infrastructure/ApiAbstractions.kt.mustache

@@ -2,7 +2,7 @@ package {{packageName}}.infrastructure
 
 typealias MultiValueMap = Map<String,List<String>>
 
-fun collectionDelimiter(collectionFormat: String) = when(collectionFormat) {
+{{#nonPublicApi}}internal {{/nonPublicApi}}fun collectionDelimiter(collectionFormat: String) = when(collectionFormat) {
     "csv" -> ","
     "tsv" -> "\t"
     "pipes" -> "|"
@@ -10,12 +10,12 @@ fun collectionDelimiter(collectionFormat: String) = when(collectionFormat) {
     else -> ""
 }
 
-val defaultMultiValueConverter: (item: Any?) -> String = { item -> "$item" }
+{{#nonPublicApi}}internal {{/nonPublicApi}}val defaultMultiValueConverter: (item: Any?) -> String = { item -> "$item" }
 
-fun <T : Any?> toMultiValue(items: Array<T>, collectionFormat: String, map: (item: T) -> String = defaultMultiValueConverter)
+{{#nonPublicApi}}internal {{/nonPublicApi}}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> {
+{{#nonPublicApi}}internal {{/nonPublicApi}}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))

modules/openapi-generator/src/main/resources/kotlin-client/infrastructure/RequestConfig.kt.mustache

@@ -8,7 +8,7 @@ package {{packageName}}.infrastructure
  * NOTE: Headers is a Map<String,String> because rfc2616 defines
  *       multi-valued headers as csv-only.
  */
-data class RequestConfig(
+{{#nonPublicApi}}internal {{/nonPublicApi}}data class RequestConfig(
     val method: RequestMethod,
     val path: String,
     val headers: MutableMap<String, String> = mutableMapOf(),

modules/openapi-generator/src/main/resources/kotlin-client/infrastructure/RequestMethod.kt.mustache

@@ -3,6 +3,6 @@ package {{packageName}}.infrastructure
 /**
  * Provides enumerated HTTP verbs
  */
-enum class RequestMethod {
+{{#nonPublicApi}}internal {{/nonPublicApi}}enum class RequestMethod {
     GET, DELETE, HEAD, OPTIONS, PATCH, POST, PUT
 }

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

@@ -23,8 +23,8 @@ import okhttp3.MediaType.Companion.toMediaTypeOrNull
 import okhttp3.Request
 import java.io.File
 
-open class ApiClient(val baseUrl: String) {
+{{#nonPublicApi}}internal {{/nonPublicApi}}open class ApiClient(val baseUrl: String) {
-    companion object {
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object {
         protected const val ContentType = "Content-Type"
         protected const val Accept = "Accept"
         protected const val Authorization = "Authorization"

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

@@ -1,38 +1,38 @@
 package {{packageName}}.infrastructure
 
-enum class ResponseType {
+{{#nonPublicApi}}internal {{/nonPublicApi}}enum class ResponseType {
     Success, Informational, Redirection, ClientError, ServerError
 }
 
-abstract class ApiInfrastructureResponse<T>(val responseType: ResponseType) {
+{{#nonPublicApi}}internal {{/nonPublicApi}}abstract class ApiInfrastructureResponse<T>(val responseType: ResponseType) {
     abstract val statusCode: Int
     abstract val headers: Map<String,List<String>>
 }
 
-class Success<T>(
+{{#nonPublicApi}}internal {{/nonPublicApi}}class Success<T>(
     val data: T,
     override val statusCode: Int = -1,
     override val headers: Map<String, List<String>> = mapOf()
 ): ApiInfrastructureResponse<T>(ResponseType.Success)
 
-class Informational<T>(
+{{#nonPublicApi}}internal {{/nonPublicApi}}class Informational<T>(
     val statusText: String,
     override val statusCode: Int = -1,
     override val headers: Map<String, List<String>> = mapOf()
 ) : ApiInfrastructureResponse<T>(ResponseType.Informational)
 
-class Redirection<T>(
+{{#nonPublicApi}}internal {{/nonPublicApi}}class Redirection<T>(
     override val statusCode: Int = -1,
     override val headers: Map<String, List<String>> = mapOf()
 ) : ApiInfrastructureResponse<T>(ResponseType.Redirection)
 
-class ClientError<T>(
+{{#nonPublicApi}}internal {{/nonPublicApi}}class ClientError<T>(
     val body: Any? = null,
     override val statusCode: Int = -1,
     override val headers: Map<String, List<String>> = mapOf()
 ) : ApiInfrastructureResponse<T>(ResponseType.ClientError)
 
-class ServerError<T>(
+{{#nonPublicApi}}internal {{/nonPublicApi}}class ServerError<T>(
     val message: String? = null,
     val body: Any? = null,
     override val statusCode: Int = -1,

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

@@ -3,7 +3,7 @@ package {{packageName}}.infrastructure
 import kotlin.properties.ReadWriteProperty
 import kotlin.reflect.KProperty
 
-object ApplicationDelegates {
+{{#nonPublicApi}}internal {{/nonPublicApi}}object ApplicationDelegates {
     /**
      * Provides a property delegate, allowing the property to be set once and only once.
      *

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

@@ -3,7 +3,7 @@ package {{packageName}}.infrastructure
 import com.squareup.moshi.FromJson
 import com.squareup.moshi.ToJson
 
-class ByteArrayAdapter {
+{{#nonPublicApi}}internal {{/nonPublicApi}}class ByteArrayAdapter {
     @ToJson
     fun toJson(data: ByteArray): String = String(data)
 

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

@@ -3,7 +3,7 @@ package {{packageName}}.infrastructure
 
 import java.lang.RuntimeException
 
-open class ClientException : RuntimeException {
+{{#nonPublicApi}}internal {{/nonPublicApi}}open class ClientException : RuntimeException {
 
     /**
      * Constructs an [ClientException] with no detail message.
@@ -17,12 +17,12 @@ open class ClientException : RuntimeException {
      */
     constructor(message: kotlin.String) : super(message)
 
-    companion object {
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object {
         private const val serialVersionUID: Long = 123L
     }
 }
 
-open class ServerException : RuntimeException {
+{{#nonPublicApi}}internal {{/nonPublicApi}}open class ServerException : RuntimeException {
 
     /**
      * Constructs an [ServerException] with no detail message.
@@ -36,7 +36,7 @@ open class ServerException : RuntimeException {
      */
     constructor(message: kotlin.String) : super(message)
 
-    companion object {
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object {
         private const val serialVersionUID: Long = 456L
     }
 }

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

@@ -11,7 +11,7 @@ import org.threeten.bp.LocalDate
 import org.threeten.bp.format.DateTimeFormatter
 {{/threetenbp}}
 
-class LocalDateAdapter {
+{{#nonPublicApi}}internal {{/nonPublicApi}}class LocalDateAdapter {
     @ToJson
     fun toJson(value: LocalDate): String {
         return DateTimeFormatter.ISO_LOCAL_DATE.format(value)

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

@@ -11,7 +11,7 @@ import org.threeten.bp.LocalDateTime
 import org.threeten.bp.format.DateTimeFormatter
 {{/threetenbp}}
 
-class LocalDateTimeAdapter {
+{{#nonPublicApi}}internal {{/nonPublicApi}}class LocalDateTimeAdapter {
     @ToJson
     fun toJson(value: LocalDateTime): String {
         return DateTimeFormatter.ISO_LOCAL_DATE_TIME.format(value)

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

@@ -5,19 +5,19 @@ import okhttp3.Response
 /**
  * Provides an extension to evaluation whether the response is a 1xx code
  */
-val Response.isInformational : Boolean get() = this.code{{#jvm-okhttp3}}(){{/jvm-okhttp3}} in 100..199
+{{#nonPublicApi}}internal {{/nonPublicApi}}val Response.isInformational : Boolean get() = this.code{{#jvm-okhttp3}}(){{/jvm-okhttp3}} in 100..199
 
 /**
  * Provides an extension to evaluation whether the response is a 3xx code
  */
-val Response.isRedirect : Boolean get() = this.code{{#jvm-okhttp3}}(){{/jvm-okhttp3}} in 300..399
+{{#nonPublicApi}}internal {{/nonPublicApi}}val Response.isRedirect : Boolean get() = this.code{{#jvm-okhttp3}}(){{/jvm-okhttp3}} in 300..399
 
 /**
  * Provides an extension to evaluation whether the response is a 4xx code
  */
-val Response.isClientError : Boolean get() = this.code{{#jvm-okhttp3}}(){{/jvm-okhttp3}} in 400..499
+{{#nonPublicApi}}internal {{/nonPublicApi}}val Response.isClientError : Boolean get() = this.code{{#jvm-okhttp3}}(){{/jvm-okhttp3}} 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{{#jvm-okhttp3}}(){{/jvm-okhttp3}} in 500..999
+{{#nonPublicApi}}internal {{/nonPublicApi}}val Response.isServerError : Boolean get() = this.code{{#jvm-okhttp3}}(){{/jvm-okhttp3}} in 500..999

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

@@ -5,7 +5,7 @@ import com.squareup.moshi.adapters.Rfc3339DateJsonAdapter
 import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
 import java.util.Date
 
-object Serializer {
+{{#nonPublicApi}}internal {{/nonPublicApi}}object Serializer {
     @JvmStatic
     val moshi: Moshi = Moshi.Builder()
         .add(Date::class.java, Rfc3339DateJsonAdapter().nullSafe())

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

@@ -4,7 +4,7 @@ import com.squareup.moshi.FromJson
 import com.squareup.moshi.ToJson
 import java.util.UUID
 
-class UUIDAdapter {
+{{#nonPublicApi}}internal {{/nonPublicApi}}class UUIDAdapter {
     @ToJson
     fun toJson(uuid: UUID) = uuid.toString()
 

modules/openapi-generator/src/main/resources/kotlin-client/libraries/multiplatform/api.mustache

@@ -16,7 +16,7 @@ import kotlinx.serialization.*
 import kotlinx.serialization.internal.StringDescriptor
 
 {{#operations}}
-class {{classname}} @UseExperimental(UnstableDefault::class) constructor(
+{{#nonPublicApi}}internal {{/nonPublicApi}}class {{classname}} @UseExperimental(UnstableDefault::class) constructor(
         baseUrl: kotlin.String = "{{{basePath}}}",
         httpClientEngine: HttpClientEngine? = null,
         serializer: KotlinxSerializer)
@@ -101,7 +101,7 @@ class {{classname}} @UseExperimental(UnstableDefault::class) constructor(
 
     {{/operation}}
 
-    companion object {
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object {
         internal fun setMappers(serializer: KotlinxSerializer) {
             {{#operation}}
             {{#hasBodyParam}}

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

@@ -24,7 +24,7 @@ import kotlinx.serialization.json.JsonConfiguration
 import {{apiPackage}}.*
 import {{modelPackage}}.*
 
-open class ApiClient(
+{{#nonPublicApi}}internal {{/nonPublicApi}}open class ApiClient(
         private val baseUrl: String,
         httpClientEngine: HttpClientEngine?,
         serializer: KotlinxSerializer) {
@@ -46,7 +46,7 @@ open class ApiClient(
         httpClientEngine?.let { HttpClient(it, clientConfig) } ?: HttpClient(clientConfig)
     }
 
-    companion object {
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object {
         protected val UNSAFE_HEADERS = listOf(HttpHeaders.ContentType)
 
         private fun setMappers(serializer: KotlinxSerializer) {

modules/openapi-generator/src/main/resources/kotlin-client/libraries/multiplatform/infrastructure/HttpResponse.kt.mustache

@@ -5,14 +5,14 @@ import io.ktor.client.call.typeInfo
 import io.ktor.http.Headers
 import io.ktor.http.isSuccess
 
-open class HttpResponse<T : Any>(val response: io.ktor.client.response.HttpResponse, val provider: BodyProvider<T>) {
+{{#nonPublicApi}}internal {{/nonPublicApi}}open class HttpResponse<T : Any>(val response: io.ktor.client.response.HttpResponse, val provider: BodyProvider<T>) {
     val status: Int = response.status.value
     val success: Boolean = response.status.isSuccess()
     val headers: Map<String, List<String>> = response.headers.mapEntries()
     suspend fun body(): T = provider.body(response)
     suspend fun <V : Any> typedBody(type: TypeInfo): V = provider.typedBody(response, type)
 
-    companion object {
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object {
         private fun Headers.mapEntries(): Map<String, List<String>> {
             val result = mutableMapOf<String, List<String>>()
             entries().forEach { result[it.key] = it.value }
@@ -21,12 +21,12 @@ open class HttpResponse<T : Any>(val response: io.ktor.client.response.HttpRespo
     }
 }
 
-interface BodyProvider<T : Any> {
+{{#nonPublicApi}}internal {{/nonPublicApi}}interface BodyProvider<T : Any> {
     suspend fun body(response: io.ktor.client.response.HttpResponse): T
     suspend fun <V : Any> typedBody(response: io.ktor.client.response.HttpResponse, type: TypeInfo): V
 }
 
-class TypedBodyProvider<T : Any>(private val type: TypeInfo) : BodyProvider<T> {
+{{#nonPublicApi}}internal {{/nonPublicApi}}class TypedBodyProvider<T : Any>(private val type: TypeInfo) : BodyProvider<T> {
     @Suppress("UNCHECKED_CAST")
     override suspend fun body(response: io.ktor.client.response.HttpResponse): T =
             response.call.receive(type) as T
@@ -36,7 +36,7 @@ class TypedBodyProvider<T : Any>(private val type: TypeInfo) : BodyProvider<T> {
             response.call.receive(type) as V
 }
 
-class MappedBodyProvider<S : Any, T : Any>(private val provider: BodyProvider<S>, private val block: S.() -> T) : BodyProvider<T> {
+{{#nonPublicApi}}internal {{/nonPublicApi}}class MappedBodyProvider<S : Any, T : Any>(private val provider: BodyProvider<S>, private val block: S.() -> T) : BodyProvider<T> {
     override suspend fun body(response: io.ktor.client.response.HttpResponse): T =
             block(provider.body(response))
 
@@ -44,8 +44,8 @@ class MappedBodyProvider<S : Any, T : Any>(private val provider: BodyProvider<S>
             provider.typedBody(response, type)
 }
 
-inline fun <reified T : Any> io.ktor.client.response.HttpResponse.wrap(): HttpResponse<T> =
+{{#nonPublicApi}}internal {{/nonPublicApi}}inline fun <reified T : Any> io.ktor.client.response.HttpResponse.wrap(): HttpResponse<T> =
         HttpResponse(this, TypedBodyProvider(typeInfo<T>()))
 
-fun <T : Any, V : Any> HttpResponse<T>.map(block: T.() -> V): HttpResponse<V> =
+{{#nonPublicApi}}internal {{/nonPublicApi}}fun <T : Any, V : Any> HttpResponse<T>.map(block: T.() -> V): HttpResponse<V> =
         HttpResponse(response, MappedBodyProvider(provider, block))

modules/openapi-generator/src/main/resources/kotlin-client/libraries/multiplatform/serial_wrapper_request_list.mustache

@@ -1,7 +1,7 @@
 @Serializable
 private class {{operationIdCamelCase}}Request(val value: List<{{#bodyParam}}{{baseType}}{{/bodyParam}}>) {
     @Serializer({{operationIdCamelCase}}Request::class)
-    companion object : KSerializer<{{operationIdCamelCase}}Request> {
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object : KSerializer<{{operationIdCamelCase}}Request> {
         private val serializer: KSerializer<List<{{#bodyParam}}{{baseType}}{{/bodyParam}}>> = {{#bodyParam}}{{baseType}}{{/bodyParam}}.serializer().list
             override val descriptor = StringDescriptor.withName("{{operationIdCamelCase}}Request")
             override fun serialize(encoder: Encoder, obj: {{operationIdCamelCase}}Request) = serializer.serialize(encoder, obj.value)

modules/openapi-generator/src/main/resources/kotlin-client/libraries/multiplatform/serial_wrapper_request_map.mustache

@@ -1,7 +1,7 @@
 @Serializable
 private class {{operationIdCamelCase}}Request(val value: Map<kotlin.String, {{#bodyParam}}{{baseType}}{{/bodyParam}}>) {
     @Serializer({{operationIdCamelCase}}Request::class)
-    companion object : KSerializer<{{operationIdCamelCase}}Request> {
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object : KSerializer<{{operationIdCamelCase}}Request> {
         private val serializer: KSerializer<Map<kotlin.String, {{#bodyParam}}{{baseType}}{{/bodyParam}}>> = (kotlin.String.serializer() to {{#bodyParam}}{{baseType}}{{/bodyParam}}.serializer()).map
             override val descriptor = StringDescriptor.withName("{{operationIdCamelCase}}Request")
             override fun serialize(encoder: Encoder, obj: {{operationIdCamelCase}}Request) = serializer.serialize(encoder, obj.value)

modules/openapi-generator/src/main/resources/kotlin-client/libraries/multiplatform/serial_wrapper_response_list.mustache

@@ -1,7 +1,7 @@
 @Serializable
 private class {{operationIdCamelCase}}Response(val value: List<{{returnBaseType}}>) {
     @Serializer({{operationIdCamelCase}}Response::class)
-    companion object : KSerializer<{{operationIdCamelCase}}Response> {
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object : KSerializer<{{operationIdCamelCase}}Response> {
         private val serializer: KSerializer<List<{{returnBaseType}}>> = {{returnBaseType}}.serializer().list
             override val descriptor = StringDescriptor.withName("{{operationIdCamelCase}}Response")
             override fun serialize(encoder: Encoder, obj: {{operationIdCamelCase}}Response) = serializer.serialize(encoder, obj.value)

modules/openapi-generator/src/main/resources/kotlin-client/libraries/multiplatform/serial_wrapper_response_map.mustache

@@ -1,7 +1,7 @@
 @Serializable
 private class {{operationIdCamelCase}}Response(val value: Map<kotlin.String, {{returnBaseType}}>) {
     @Serializer({{operationIdCamelCase}}Response::class)
-    companion object : KSerializer<{{operationIdCamelCase}}Response> {
+    {{#nonPublicApi}}internal {{/nonPublicApi}}companion object : KSerializer<{{operationIdCamelCase}}Response> {
         private val serializer: KSerializer<Map<kotlin.String, {{returnBaseType}}>> = (kotlin.String.serializer() to {{returnBaseType}}.serializer()).map
             override val descriptor = StringDescriptor.withName("{{operationIdCamelCase}}Response")
             override fun serialize(encoder: Encoder, obj: {{operationIdCamelCase}}Response) = serializer.serialize(encoder, obj.value)

samples/client/petstore/kotlin-nonpublic/.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

samples/client/petstore/kotlin-nonpublic/.openapi-generator/VERSION

@@ -0,0 +1 @@
+4.2.0-SNAPSHOT

samples/client/petstore/kotlin-nonpublic/README.md

@@ -0,0 +1,90 @@
+# org.openapitools.client - Kotlin client library for OpenAPI Petstore
+
+## Requires
+
+* Kotlin 1.3.41
+* Gradle 4.9
+
+## 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 name="documentation-for-api-endpoints"></a>
+## Documentation for API Endpoints
+
+All URIs are relative to *http://petstore.swagger.io/v2*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+*PetApi* | [**addPet**](docs/PetApi.md#addpet) | **POST** /pet | Add a new pet to the store
+*PetApi* | [**deletePet**](docs/PetApi.md#deletepet) | **DELETE** /pet/{petId} | Deletes a pet
+*PetApi* | [**findPetsByStatus**](docs/PetApi.md#findpetsbystatus) | **GET** /pet/findByStatus | Finds Pets by status
+*PetApi* | [**findPetsByTags**](docs/PetApi.md#findpetsbytags) | **GET** /pet/findByTags | Finds Pets by tags
+*PetApi* | [**getPetById**](docs/PetApi.md#getpetbyid) | **GET** /pet/{petId} | Find pet by ID
+*PetApi* | [**updatePet**](docs/PetApi.md#updatepet) | **PUT** /pet | Update an existing pet
+*PetApi* | [**updatePetWithForm**](docs/PetApi.md#updatepetwithform) | **POST** /pet/{petId} | Updates a pet in the store with form data
+*PetApi* | [**uploadFile**](docs/PetApi.md#uploadfile) | **POST** /pet/{petId}/uploadImage | uploads an image
+*StoreApi* | [**deleteOrder**](docs/StoreApi.md#deleteorder) | **DELETE** /store/order/{orderId} | Delete purchase order by ID
+*StoreApi* | [**getInventory**](docs/StoreApi.md#getinventory) | **GET** /store/inventory | Returns pet inventories by status
+*StoreApi* | [**getOrderById**](docs/StoreApi.md#getorderbyid) | **GET** /store/order/{orderId} | Find purchase order by ID
+*StoreApi* | [**placeOrder**](docs/StoreApi.md#placeorder) | **POST** /store/order | Place an order for a pet
+*UserApi* | [**createUser**](docs/UserApi.md#createuser) | **POST** /user | Create user
+*UserApi* | [**createUsersWithArrayInput**](docs/UserApi.md#createuserswitharrayinput) | **POST** /user/createWithArray | Creates list of users with given input array
+*UserApi* | [**createUsersWithListInput**](docs/UserApi.md#createuserswithlistinput) | **POST** /user/createWithList | Creates list of users with given input array
+*UserApi* | [**deleteUser**](docs/UserApi.md#deleteuser) | **DELETE** /user/{username} | Delete user
+*UserApi* | [**getUserByName**](docs/UserApi.md#getuserbyname) | **GET** /user/{username} | Get user by user name
+*UserApi* | [**loginUser**](docs/UserApi.md#loginuser) | **GET** /user/login | Logs user into the system
+*UserApi* | [**logoutUser**](docs/UserApi.md#logoutuser) | **GET** /user/logout | Logs out current logged in user session
+*UserApi* | [**updateUser**](docs/UserApi.md#updateuser) | **PUT** /user/{username} | Updated user
+
+
+<a name="documentation-for-models"></a>
+## Documentation for Models
+
+ - [org.openapitools.client.models.ApiResponse](docs/ApiResponse.md)
+ - [org.openapitools.client.models.Category](docs/Category.md)
+ - [org.openapitools.client.models.Order](docs/Order.md)
+ - [org.openapitools.client.models.Pet](docs/Pet.md)
+ - [org.openapitools.client.models.Tag](docs/Tag.md)
+ - [org.openapitools.client.models.User](docs/User.md)
+
+
+<a name="documentation-for-authorization"></a>
+## Documentation for Authorization
+
+<a name="api_key"></a>
+### api_key
+
+- **Type**: API key
+- **API key parameter name**: api_key
+- **Location**: HTTP header
+
+<a name="petstore_auth"></a>
+### petstore_auth
+
+- **Type**: OAuth
+- **Flow**: implicit
+- **Authorization URL**: http://petstore.swagger.io/api/oauth/dialog
+- **Scopes**: 
+  - write:pets: modify pets in your account
+  - read:pets: read your pets
+

samples/client/petstore/kotlin-nonpublic/build.gradle

@@ -0,0 +1,37 @@
+group 'org.openapitools'
+version '1.0.0'
+
+wrapper {
+    gradleVersion = '4.9'
+    distributionUrl = "https://services.gradle.org/distributions/gradle-$gradleVersion-all.zip"
+}
+
+buildscript {
+    ext.kotlin_version = '1.3.41'
+
+    repositories {
+        mavenCentral()
+    }
+    dependencies {
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+    }
+}
+
+apply plugin: 'kotlin'
+
+repositories {
+    mavenCentral()
+}
+
+test {
+    useJUnitPlatform()
+}
+
+dependencies {
+    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
+    compile "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
+    compile "com.squareup.moshi:moshi-kotlin:1.8.0"
+    compile "com.squareup.moshi:moshi-adapters:1.8.0"
+    compile "com.squareup.okhttp3:okhttp:4.2.0"
+    testImplementation "io.kotlintest:kotlintest-runner-junit5:3.1.0"
+}

samples/client/petstore/kotlin-nonpublic/docs/ApiResponse.md

@@ -0,0 +1,12 @@
+
+# ApiResponse
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**code** | **kotlin.Int** |  |  [optional]
+**type** | **kotlin.String** |  |  [optional]
+**message** | **kotlin.String** |  |  [optional]
+
+
+

samples/client/petstore/kotlin-nonpublic/docs/Category.md

@@ -0,0 +1,11 @@
+
+# Category
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **kotlin.Long** |  |  [optional]
+**name** | **kotlin.String** |  |  [optional]
+
+
+

samples/client/petstore/kotlin-nonpublic/docs/Order.md

@@ -0,0 +1,22 @@
+
+# Order
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **kotlin.Long** |  |  [optional]
+**petId** | **kotlin.Long** |  |  [optional]
+**quantity** | **kotlin.Int** |  |  [optional]
+**shipDate** | [**java.time.LocalDateTime**](java.time.LocalDateTime.md) |  |  [optional]
+**status** | [**inline**](#StatusEnum) | Order Status |  [optional]
+**complete** | **kotlin.Boolean** |  |  [optional]
+
+
+<a name="StatusEnum"></a>
+## Enum: status
+Name | Value
+---- | -----
+status | placed, approved, delivered
+
+
+

samples/client/petstore/kotlin-nonpublic/docs/Pet.md

@@ -0,0 +1,22 @@
+
+# Pet
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **kotlin.Long** |  |  [optional]
+**category** | [**Category**](Category.md) |  |  [optional]
+**name** | **kotlin.String** |  | 
+**photoUrls** | **kotlin.Array<kotlin.String>** |  | 
+**tags** | [**kotlin.Array<Tag>**](Tag.md) |  |  [optional]
+**status** | [**inline**](#StatusEnum) | pet status in the store |  [optional]
+
+
+<a name="StatusEnum"></a>
+## Enum: status
+Name | Value
+---- | -----
+status | available, pending, sold
+
+
+

samples/client/petstore/kotlin-nonpublic/docs/PetApi.md

@@ -0,0 +1,405 @@
+# PetApi
+
+All URIs are relative to *http://petstore.swagger.io/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**addPet**](PetApi.md#addPet) | **POST** /pet | Add a new pet to the store
+[**deletePet**](PetApi.md#deletePet) | **DELETE** /pet/{petId} | Deletes a pet
+[**findPetsByStatus**](PetApi.md#findPetsByStatus) | **GET** /pet/findByStatus | Finds Pets by status
+[**findPetsByTags**](PetApi.md#findPetsByTags) | **GET** /pet/findByTags | Finds Pets by tags
+[**getPetById**](PetApi.md#getPetById) | **GET** /pet/{petId} | Find pet by ID
+[**updatePet**](PetApi.md#updatePet) | **PUT** /pet | Update an existing pet
+[**updatePetWithForm**](PetApi.md#updatePetWithForm) | **POST** /pet/{petId} | Updates a pet in the store with form data
+[**uploadFile**](PetApi.md#uploadFile) | **POST** /pet/{petId}/uploadImage | uploads an image
+
+
+<a name="addPet"></a>
+# **addPet**
+> addPet(body)
+
+Add a new pet to the store
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = PetApi()
+val body : Pet =  // Pet | Pet object that needs to be added to the store
+try {
+    apiInstance.addPet(body)
+} catch (e: ClientException) {
+    println("4xx response calling PetApi#addPet")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling PetApi#addPet")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **body** | [**Pet**](Pet.md)| Pet object that needs to be added to the store |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+
+Configure petstore_auth:
+    ApiClient.accessToken = ""
+
+### HTTP request headers
+
+ - **Content-Type**: application/json, application/xml
+ - **Accept**: Not defined
+
+<a name="deletePet"></a>
+# **deletePet**
+> deletePet(petId, apiKey)
+
+Deletes a pet
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = PetApi()
+val petId : kotlin.Long = 789 // kotlin.Long | Pet id to delete
+val apiKey : kotlin.String = apiKey_example // kotlin.String | 
+try {
+    apiInstance.deletePet(petId, apiKey)
+} catch (e: ClientException) {
+    println("4xx response calling PetApi#deletePet")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling PetApi#deletePet")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **petId** | **kotlin.Long**| Pet id to delete |
+ **apiKey** | **kotlin.String**|  | [optional]
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+
+Configure petstore_auth:
+    ApiClient.accessToken = ""
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="findPetsByStatus"></a>
+# **findPetsByStatus**
+> kotlin.Array&lt;Pet&gt; findPetsByStatus(status)
+
+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 = PetApi()
+val status : kotlin.Array<kotlin.String> =  // kotlin.Array<kotlin.String> | Status values that need to be considered for filter
+try {
+    val result : kotlin.Array<Pet> = apiInstance.findPetsByStatus(status)
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling PetApi#findPetsByStatus")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling PetApi#findPetsByStatus")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **status** | [**kotlin.Array&lt;kotlin.String&gt;**](kotlin.String.md)| Status values that need to be considered for filter | [enum: available, pending, sold]
+
+### Return type
+
+[**kotlin.Array&lt;Pet&gt;**](Pet.md)
+
+### Authorization
+
+
+Configure petstore_auth:
+    ApiClient.accessToken = ""
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="findPetsByTags"></a>
+# **findPetsByTags**
+> kotlin.Array&lt;Pet&gt; findPetsByTags(tags)
+
+Finds Pets by tags
+
+Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = PetApi()
+val tags : kotlin.Array<kotlin.String> =  // kotlin.Array<kotlin.String> | Tags to filter by
+try {
+    val result : kotlin.Array<Pet> = apiInstance.findPetsByTags(tags)
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling PetApi#findPetsByTags")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling PetApi#findPetsByTags")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **tags** | [**kotlin.Array&lt;kotlin.String&gt;**](kotlin.String.md)| Tags to filter by |
+
+### Return type
+
+[**kotlin.Array&lt;Pet&gt;**](Pet.md)
+
+### Authorization
+
+
+Configure petstore_auth:
+    ApiClient.accessToken = ""
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="getPetById"></a>
+# **getPetById**
+> Pet getPetById(petId)
+
+Find pet by ID
+
+Returns a single pet
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = PetApi()
+val petId : kotlin.Long = 789 // kotlin.Long | ID of pet to return
+try {
+    val result : Pet = apiInstance.getPetById(petId)
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling PetApi#getPetById")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling PetApi#getPetById")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **petId** | **kotlin.Long**| ID of pet to return |
+
+### Return type
+
+[**Pet**](Pet.md)
+
+### Authorization
+
+
+Configure api_key:
+    ApiClient.apiKey["api_key"] = ""
+    ApiClient.apiKeyPrefix["api_key"] = ""
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="updatePet"></a>
+# **updatePet**
+> updatePet(body)
+
+Update an existing pet
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = PetApi()
+val body : Pet =  // Pet | Pet object that needs to be added to the store
+try {
+    apiInstance.updatePet(body)
+} catch (e: ClientException) {
+    println("4xx response calling PetApi#updatePet")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling PetApi#updatePet")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **body** | [**Pet**](Pet.md)| Pet object that needs to be added to the store |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+
+Configure petstore_auth:
+    ApiClient.accessToken = ""
+
+### HTTP request headers
+
+ - **Content-Type**: application/json, application/xml
+ - **Accept**: Not defined
+
+<a name="updatePetWithForm"></a>
+# **updatePetWithForm**
+> updatePetWithForm(petId, name, status)
+
+Updates a pet in the store with form data
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = PetApi()
+val petId : kotlin.Long = 789 // kotlin.Long | ID of pet that needs to be updated
+val name : kotlin.String = name_example // kotlin.String | Updated name of the pet
+val status : kotlin.String = status_example // kotlin.String | Updated status of the pet
+try {
+    apiInstance.updatePetWithForm(petId, name, status)
+} catch (e: ClientException) {
+    println("4xx response calling PetApi#updatePetWithForm")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling PetApi#updatePetWithForm")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **petId** | **kotlin.Long**| ID of pet that needs to be updated |
+ **name** | **kotlin.String**| Updated name of the pet | [optional]
+ **status** | **kotlin.String**| Updated status of the pet | [optional]
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+
+Configure petstore_auth:
+    ApiClient.accessToken = ""
+
+### HTTP request headers
+
+ - **Content-Type**: application/x-www-form-urlencoded
+ - **Accept**: Not defined
+
+<a name="uploadFile"></a>
+# **uploadFile**
+> ApiResponse uploadFile(petId, additionalMetadata, file)
+
+uploads an image
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = PetApi()
+val petId : kotlin.Long = 789 // kotlin.Long | ID of pet to update
+val additionalMetadata : kotlin.String = additionalMetadata_example // kotlin.String | Additional data to pass to server
+val file : java.io.File = BINARY_DATA_HERE // java.io.File | file to upload
+try {
+    val result : ApiResponse = apiInstance.uploadFile(petId, additionalMetadata, file)
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling PetApi#uploadFile")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling PetApi#uploadFile")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **petId** | **kotlin.Long**| ID of pet to update |
+ **additionalMetadata** | **kotlin.String**| Additional data to pass to server | [optional]
+ **file** | **java.io.File**| file to upload | [optional]
+
+### Return type
+
+[**ApiResponse**](ApiResponse.md)
+
+### Authorization
+
+
+Configure petstore_auth:
+    ApiClient.accessToken = ""
+
+### HTTP request headers
+
+ - **Content-Type**: multipart/form-data
+ - **Accept**: application/json
+

samples/client/petstore/kotlin-nonpublic/docs/StoreApi.md

@@ -0,0 +1,196 @@
+# StoreApi
+
+All URIs are relative to *http://petstore.swagger.io/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**deleteOrder**](StoreApi.md#deleteOrder) | **DELETE** /store/order/{orderId} | Delete purchase order by ID
+[**getInventory**](StoreApi.md#getInventory) | **GET** /store/inventory | Returns pet inventories by status
+[**getOrderById**](StoreApi.md#getOrderById) | **GET** /store/order/{orderId} | Find purchase order by ID
+[**placeOrder**](StoreApi.md#placeOrder) | **POST** /store/order | Place an order for a pet
+
+
+<a name="deleteOrder"></a>
+# **deleteOrder**
+> deleteOrder(orderId)
+
+Delete purchase order by ID
+
+For valid response try integer IDs with value &lt; 1000. Anything above 1000 or nonintegers will generate API errors
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = StoreApi()
+val orderId : kotlin.String = orderId_example // kotlin.String | ID of the order that needs to be deleted
+try {
+    apiInstance.deleteOrder(orderId)
+} catch (e: ClientException) {
+    println("4xx response calling StoreApi#deleteOrder")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling StoreApi#deleteOrder")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **orderId** | **kotlin.String**| ID of the order that needs to be deleted |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="getInventory"></a>
+# **getInventory**
+> kotlin.collections.Map&lt;kotlin.String, kotlin.Int&gt; getInventory()
+
+Returns pet inventories by status
+
+Returns a map of status codes to quantities
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = StoreApi()
+try {
+    val result : kotlin.collections.Map<kotlin.String, kotlin.Int> = apiInstance.getInventory()
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling StoreApi#getInventory")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling StoreApi#getInventory")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+This endpoint does not need any parameter.
+
+### Return type
+
+**kotlin.collections.Map&lt;kotlin.String, kotlin.Int&gt;**
+
+### Authorization
+
+
+Configure api_key:
+    ApiClient.apiKey["api_key"] = ""
+    ApiClient.apiKeyPrefix["api_key"] = ""
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/json
+
+<a name="getOrderById"></a>
+# **getOrderById**
+> Order getOrderById(orderId)
+
+Find purchase order by ID
+
+For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = StoreApi()
+val orderId : kotlin.Long = 789 // kotlin.Long | ID of pet that needs to be fetched
+try {
+    val result : Order = apiInstance.getOrderById(orderId)
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling StoreApi#getOrderById")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling StoreApi#getOrderById")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **orderId** | **kotlin.Long**| ID of pet that needs to be fetched |
+
+### Return type
+
+[**Order**](Order.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="placeOrder"></a>
+# **placeOrder**
+> Order placeOrder(body)
+
+Place an order for a pet
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = StoreApi()
+val body : Order =  // Order | order placed for purchasing the pet
+try {
+    val result : Order = apiInstance.placeOrder(body)
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling StoreApi#placeOrder")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling StoreApi#placeOrder")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **body** | [**Order**](Order.md)| order placed for purchasing the pet |
+
+### Return type
+
+[**Order**](Order.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+

samples/client/petstore/kotlin-nonpublic/docs/Tag.md

@@ -0,0 +1,11 @@
+
+# Tag
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **kotlin.Long** |  |  [optional]
+**name** | **kotlin.String** |  |  [optional]
+
+
+

samples/client/petstore/kotlin-nonpublic/docs/User.md

@@ -0,0 +1,17 @@
+
+# User
+
+## Properties
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**id** | **kotlin.Long** |  |  [optional]
+**username** | **kotlin.String** |  |  [optional]
+**firstName** | **kotlin.String** |  |  [optional]
+**lastName** | **kotlin.String** |  |  [optional]
+**email** | **kotlin.String** |  |  [optional]
+**password** | **kotlin.String** |  |  [optional]
+**phone** | **kotlin.String** |  |  [optional]
+**userStatus** | **kotlin.Int** | User Status |  [optional]
+
+
+

samples/client/petstore/kotlin-nonpublic/docs/UserApi.md

@@ -0,0 +1,376 @@
+# UserApi
+
+All URIs are relative to *http://petstore.swagger.io/v2*
+
+Method | HTTP request | Description
+------------- | ------------- | -------------
+[**createUser**](UserApi.md#createUser) | **POST** /user | Create user
+[**createUsersWithArrayInput**](UserApi.md#createUsersWithArrayInput) | **POST** /user/createWithArray | Creates list of users with given input array
+[**createUsersWithListInput**](UserApi.md#createUsersWithListInput) | **POST** /user/createWithList | Creates list of users with given input array
+[**deleteUser**](UserApi.md#deleteUser) | **DELETE** /user/{username} | Delete user
+[**getUserByName**](UserApi.md#getUserByName) | **GET** /user/{username} | Get user by user name
+[**loginUser**](UserApi.md#loginUser) | **GET** /user/login | Logs user into the system
+[**logoutUser**](UserApi.md#logoutUser) | **GET** /user/logout | Logs out current logged in user session
+[**updateUser**](UserApi.md#updateUser) | **PUT** /user/{username} | Updated user
+
+
+<a name="createUser"></a>
+# **createUser**
+> createUser(body)
+
+Create user
+
+This can only be done by the logged in user.
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = UserApi()
+val body : User =  // User | Created user object
+try {
+    apiInstance.createUser(body)
+} catch (e: ClientException) {
+    println("4xx response calling UserApi#createUser")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling UserApi#createUser")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **body** | [**User**](User.md)| Created user object |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="createUsersWithArrayInput"></a>
+# **createUsersWithArrayInput**
+> createUsersWithArrayInput(body)
+
+Creates list of users with given input array
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = UserApi()
+val body : kotlin.Array<User> =  // kotlin.Array<User> | List of user object
+try {
+    apiInstance.createUsersWithArrayInput(body)
+} catch (e: ClientException) {
+    println("4xx response calling UserApi#createUsersWithArrayInput")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling UserApi#createUsersWithArrayInput")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **body** | [**kotlin.Array&lt;User&gt;**](User.md)| List of user object |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="createUsersWithListInput"></a>
+# **createUsersWithListInput**
+> createUsersWithListInput(body)
+
+Creates list of users with given input array
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = UserApi()
+val body : kotlin.Array<User> =  // kotlin.Array<User> | List of user object
+try {
+    apiInstance.createUsersWithListInput(body)
+} catch (e: ClientException) {
+    println("4xx response calling UserApi#createUsersWithListInput")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling UserApi#createUsersWithListInput")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **body** | [**kotlin.Array&lt;User&gt;**](User.md)| List of user object |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="deleteUser"></a>
+# **deleteUser**
+> deleteUser(username)
+
+Delete user
+
+This can only be done by the logged in user.
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = UserApi()
+val username : kotlin.String = username_example // kotlin.String | The name that needs to be deleted
+try {
+    apiInstance.deleteUser(username)
+} catch (e: ClientException) {
+    println("4xx response calling UserApi#deleteUser")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling UserApi#deleteUser")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **username** | **kotlin.String**| The name that needs to be deleted |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="getUserByName"></a>
+# **getUserByName**
+> User getUserByName(username)
+
+Get user by user name
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = UserApi()
+val username : kotlin.String = username_example // kotlin.String | The name that needs to be fetched. Use user1 for testing.
+try {
+    val result : User = apiInstance.getUserByName(username)
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling UserApi#getUserByName")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling UserApi#getUserByName")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **username** | **kotlin.String**| The name that needs to be fetched. Use user1 for testing. |
+
+### Return type
+
+[**User**](User.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="loginUser"></a>
+# **loginUser**
+> kotlin.String loginUser(username, password)
+
+Logs user into the system
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = UserApi()
+val username : kotlin.String = username_example // kotlin.String | The user name for login
+val password : kotlin.String = password_example // kotlin.String | The password for login in clear text
+try {
+    val result : kotlin.String = apiInstance.loginUser(username, password)
+    println(result)
+} catch (e: ClientException) {
+    println("4xx response calling UserApi#loginUser")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling UserApi#loginUser")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **username** | **kotlin.String**| The user name for login |
+ **password** | **kotlin.String**| The password for login in clear text |
+
+### Return type
+
+**kotlin.String**
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: application/xml, application/json
+
+<a name="logoutUser"></a>
+# **logoutUser**
+> logoutUser()
+
+Logs out current logged in user session
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = UserApi()
+try {
+    apiInstance.logoutUser()
+} catch (e: ClientException) {
+    println("4xx response calling UserApi#logoutUser")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling UserApi#logoutUser")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+This endpoint does not need any parameter.
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+
+<a name="updateUser"></a>
+# **updateUser**
+> updateUser(username, body)
+
+Updated user
+
+This can only be done by the logged in user.
+
+### Example
+```kotlin
+// Import classes:
+//import org.openapitools.client.infrastructure.*
+//import org.openapitools.client.models.*
+
+val apiInstance = UserApi()
+val username : kotlin.String = username_example // kotlin.String | name that need to be deleted
+val body : User =  // User | Updated user object
+try {
+    apiInstance.updateUser(username, body)
+} catch (e: ClientException) {
+    println("4xx response calling UserApi#updateUser")
+    e.printStackTrace()
+} catch (e: ServerException) {
+    println("5xx response calling UserApi#updateUser")
+    e.printStackTrace()
+}
+```
+
+### Parameters
+
+Name | Type | Description  | Notes
+------------- | ------------- | ------------- | -------------
+ **username** | **kotlin.String**| name that need to be deleted |
+ **body** | [**User**](User.md)| Updated user object |
+
+### Return type
+
+null (empty response body)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+ - **Content-Type**: Not defined
+ - **Accept**: Not defined
+

samples/client/petstore/kotlin-nonpublic/settings.gradle

@@ -0,0 +1,2 @@
+
+rootProject.name = 'kotlin-petstore-nonpublic'

samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/apis/PetApi.kt

@@ -0,0 +1,280 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.client.apis
+
+import org.openapitools.client.models.ApiResponse
+import org.openapitools.client.models.Pet
+
+import org.openapitools.client.infrastructure.ApiClient
+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.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
+
+internal class PetApi(basePath: kotlin.String = "http://petstore.swagger.io/v2") : ApiClient(basePath) {
+
+    /**
+    * Add a new pet to the store
+    * 
+    * @param body Pet object that needs to be added to the store 
+    * @return void
+    */
+    fun addPet(body: Pet) : Unit {
+        val localVariableBody: kotlin.Any? = body
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.POST,
+            "/pet",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.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 -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Deletes a pet
+    * 
+    * @param petId Pet id to delete 
+    * @param apiKey  (optional)
+    * @return void
+    */
+    fun deletePet(petId: kotlin.Long, apiKey: kotlin.String?) : Unit {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf("api_key" to apiKey.toString())
+        val localVariableConfig = RequestConfig(
+            RequestMethod.DELETE,
+            "/pet/{petId}".replace("{"+"petId"+"}", "$petId"),
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.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 -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Finds Pets by status
+    * Multiple status values can be provided with comma separated strings
+    * @param status Status values that need to be considered for filter 
+    * @return kotlin.Array<Pet>
+    */
+    @Suppress("UNCHECKED_CAST")
+    fun findPetsByStatus(status: kotlin.Array<kotlin.String>) : kotlin.Array<Pet> {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf("status" to toMultiValue(status.toList(), "csv"))
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.GET,
+            "/pet/findByStatus",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<kotlin.Array<Pet>>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> (response as Success<*>).data as kotlin.Array<Pet>
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Finds Pets by tags
+    * Multiple tags can be provided with comma separated strings. Use tag1, tag2, tag3 for testing.
+    * @param tags Tags to filter by 
+    * @return kotlin.Array<Pet>
+    */
+    @Suppress("UNCHECKED_CAST")
+    fun findPetsByTags(tags: kotlin.Array<kotlin.String>) : kotlin.Array<Pet> {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf("tags" to toMultiValue(tags.toList(), "csv"))
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.GET,
+            "/pet/findByTags",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<kotlin.Array<Pet>>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> (response as Success<*>).data as kotlin.Array<Pet>
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Find pet by ID
+    * Returns a single pet
+    * @param petId ID of pet to return 
+    * @return Pet
+    */
+    @Suppress("UNCHECKED_CAST")
+    fun getPetById(petId: kotlin.Long) : Pet {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.GET,
+            "/pet/{petId}".replace("{"+"petId"+"}", "$petId"),
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Pet>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> (response as Success<*>).data as Pet
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Update an existing pet
+    * 
+    * @param body Pet object that needs to be added to the store 
+    * @return void
+    */
+    fun updatePet(body: Pet) : Unit {
+        val localVariableBody: kotlin.Any? = body
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.PUT,
+            "/pet",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.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 -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Updates a pet in the store with form data
+    * 
+    * @param petId ID of pet that needs to be updated 
+    * @param name Updated name of the pet (optional)
+    * @param status Updated status of the pet (optional)
+    * @return void
+    */
+    fun updatePetWithForm(petId: kotlin.Long, name: kotlin.String?, status: kotlin.String?) : Unit {
+        val localVariableBody: kotlin.Any? = mapOf("name" to "$name", "status" to "$status")
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf("Content-Type" to "")
+        val localVariableConfig = RequestConfig(
+            RequestMethod.POST,
+            "/pet/{petId}".replace("{"+"petId"+"}", "$petId"),
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> Unit
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * uploads an image
+    * 
+    * @param petId ID of pet to update 
+    * @param additionalMetadata Additional data to pass to server (optional)
+    * @param file file to upload (optional)
+    * @return ApiResponse
+    */
+    @Suppress("UNCHECKED_CAST")
+    fun uploadFile(petId: kotlin.Long, additionalMetadata: kotlin.String?, file: java.io.File?) : ApiResponse {
+        val localVariableBody: kotlin.Any? = mapOf("additionalMetadata" to "$additionalMetadata", "file" to "$file")
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf("Content-Type" to "")
+        val localVariableConfig = RequestConfig(
+            RequestMethod.POST,
+            "/pet/{petId}/uploadImage".replace("{"+"petId"+"}", "$petId"),
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<ApiResponse>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> (response as Success<*>).data as ApiResponse
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+}

samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/apis/StoreApi.kt

@@ -0,0 +1,152 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.client.apis
+
+import org.openapitools.client.models.Order
+
+import org.openapitools.client.infrastructure.ApiClient
+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.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
+
+internal class StoreApi(basePath: kotlin.String = "http://petstore.swagger.io/v2") : ApiClient(basePath) {
+
+    /**
+    * Delete purchase order by ID
+    * For valid response try integer IDs with value < 1000. Anything above 1000 or nonintegers will generate API errors
+    * @param orderId ID of the order that needs to be deleted 
+    * @return void
+    */
+    fun deleteOrder(orderId: kotlin.String) : Unit {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.DELETE,
+            "/store/order/{orderId}".replace("{"+"orderId"+"}", "$orderId"),
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.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 -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Returns pet inventories by status
+    * Returns a map of status codes to quantities
+    * @return kotlin.collections.Map<kotlin.String, kotlin.Int>
+    */
+    @Suppress("UNCHECKED_CAST")
+    fun getInventory() : kotlin.collections.Map<kotlin.String, kotlin.Int> {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.GET,
+            "/store/inventory",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<kotlin.collections.Map<kotlin.String, kotlin.Int>>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> (response as Success<*>).data as kotlin.collections.Map<kotlin.String, kotlin.Int>
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Find purchase order by ID
+    * For valid response try integer IDs with value &lt;&#x3D; 5 or &gt; 10. Other values will generated exceptions
+    * @param orderId ID of pet that needs to be fetched 
+    * @return Order
+    */
+    @Suppress("UNCHECKED_CAST")
+    fun getOrderById(orderId: kotlin.Long) : Order {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.GET,
+            "/store/order/{orderId}".replace("{"+"orderId"+"}", "$orderId"),
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Order>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> (response as Success<*>).data as Order
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Place an order for a pet
+    * 
+    * @param body order placed for purchasing the pet 
+    * @return Order
+    */
+    @Suppress("UNCHECKED_CAST")
+    fun placeOrder(body: Order) : Order {
+        val localVariableBody: kotlin.Any? = body
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.POST,
+            "/store/order",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Order>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> (response as Success<*>).data as Order
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+}

samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/apis/UserApi.kt

@@ -0,0 +1,273 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.client.apis
+
+import org.openapitools.client.models.User
+
+import org.openapitools.client.infrastructure.ApiClient
+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.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
+
+internal class UserApi(basePath: kotlin.String = "http://petstore.swagger.io/v2") : ApiClient(basePath) {
+
+    /**
+    * Create user
+    * This can only be done by the logged in user.
+    * @param body Created user object 
+    * @return void
+    */
+    fun createUser(body: User) : Unit {
+        val localVariableBody: kotlin.Any? = body
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.POST,
+            "/user",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.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 -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Creates list of users with given input array
+    * 
+    * @param body List of user object 
+    * @return void
+    */
+    fun createUsersWithArrayInput(body: kotlin.Array<User>) : Unit {
+        val localVariableBody: kotlin.Any? = body
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.POST,
+            "/user/createWithArray",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.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 -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Creates list of users with given input array
+    * 
+    * @param body List of user object 
+    * @return void
+    */
+    fun createUsersWithListInput(body: kotlin.Array<User>) : Unit {
+        val localVariableBody: kotlin.Any? = body
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.POST,
+            "/user/createWithList",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.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 -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Delete user
+    * This can only be done by the logged in user.
+    * @param username The name that needs to be deleted 
+    * @return void
+    */
+    fun deleteUser(username: kotlin.String) : Unit {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.DELETE,
+            "/user/{username}".replace("{"+"username"+"}", "$username"),
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> Unit
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Get user by user name
+    * 
+    * @param username The name that needs to be fetched. Use user1 for testing. 
+    * @return User
+    */
+    @Suppress("UNCHECKED_CAST")
+    fun getUserByName(username: kotlin.String) : User {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.GET,
+            "/user/{username}".replace("{"+"username"+"}", "$username"),
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<User>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> (response as Success<*>).data as User
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Logs user into the system
+    * 
+    * @param username The user name for login 
+    * @param password The password for login in clear text 
+    * @return kotlin.String
+    */
+    @Suppress("UNCHECKED_CAST")
+    fun loginUser(username: kotlin.String, password: kotlin.String) : kotlin.String {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf("username" to listOf("$username"), "password" to listOf("$password"))
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.GET,
+            "/user/login",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<kotlin.String>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.responseType) {
+            ResponseType.Success -> (response as Success<*>).data as kotlin.String
+            ResponseType.Informational -> throw UnsupportedOperationException("Client does not support Informational responses.")
+            ResponseType.Redirection -> throw UnsupportedOperationException("Client does not support Redirection responses.")
+            ResponseType.ClientError -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Logs out current logged in user session
+    * 
+    * @return void
+    */
+    fun logoutUser() : Unit {
+        val localVariableBody: kotlin.Any? = null
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.GET,
+            "/user/logout",
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.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 -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+    /**
+    * Updated user
+    * This can only be done by the logged in user.
+    * @param username name that need to be deleted 
+    * @param body Updated user object 
+    * @return void
+    */
+    fun updateUser(username: kotlin.String, body: User) : Unit {
+        val localVariableBody: kotlin.Any? = body
+        val localVariableQuery: MultiValueMap = mapOf()
+        val localVariableHeaders: MutableMap<String, String> = mutableMapOf()
+        val localVariableConfig = RequestConfig(
+            RequestMethod.PUT,
+            "/user/{username}".replace("{"+"username"+"}", "$username"),
+            query = localVariableQuery,
+            headers = localVariableHeaders
+        )
+        val response = request<Any?>(
+            localVariableConfig,
+            localVariableBody
+        )
+
+        return when (response.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 -> throw ClientException((response as ClientError<*>).body as? String ?: "Client error")
+            ResponseType.ServerError -> throw ServerException((response as ServerError<*>).message ?: "Server error")
+        }
+    }
+
+}

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

@@ -0,0 +1,23 @@
+package org.openapitools.client.infrastructure
+
+typealias MultiValueMap = Map<String,List<String>>
+
+internal fun collectionDelimiter(collectionFormat: String) = when(collectionFormat) {
+    "csv" -> ","
+    "tsv" -> "\t"
+    "pipes" -> "|"
+    "ssv" -> " "
+    else -> ""
+}
+
+internal val defaultMultiValueConverter: (item: Any?) -> String = { item -> "$item" }
+
+internal fun <T : Any?> toMultiValue(items: Array<T>, collectionFormat: String, map: (item: T) -> String = defaultMultiValueConverter)
+        = toMultiValue(items.asIterable(), collectionFormat, map)
+
+internal 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))
+    }
+}

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

@@ -0,0 +1,170 @@
+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 java.io.File
+
+internal open class ApiClient(val baseUrl: String) {
+    internal 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
+
+        @JvmStatic
+        val client: OkHttpClient by lazy {
+            builder.build()
+        }
+
+        @JvmStatic
+        val builder: OkHttpClient.Builder = OkHttpClient.Builder()
+    }
+
+    protected inline fun <reified T> requestBody(content: T, mediaType: String = JsonMediaType): RequestBody =
+        when {
+            content is File -> content.asRequestBody(
+                mediaType.toMediaTypeOrNull()
+            )
+            mediaType == FormDataMediaType || mediaType == FormUrlEncMediaType -> {
+                FormBody.Builder().apply {
+                    // content's type *must* be Map<String, Any>
+                    @Suppress("UNCHECKED_CAST")
+                    (content as Map<String,String>).forEach { (key, value) ->
+                        add(key, value)
+                    }
+                }.build()
+            }
+            mediaType == JsonMediaType -> Serializer.moshi.adapter(T::class.java).toJson(content).toRequestBody(
+                mediaType.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.")
+        }
+
+    protected inline fun <reified T: Any?> responseBody(body: ResponseBody?, mediaType: String? = JsonMediaType): T? {
+        if(body == null) {
+            return null
+        }
+        val bodyContent = body.string()
+        if (bodyContent.isEmpty()) {
+            return null
+        }
+        return when(mediaType) {
+            JsonMediaType -> Serializer.moshi.adapter(T::class.java).fromJson(bodyContent)
+            else ->  throw UnsupportedOperationException("responseBody currently only supports JSON body.")
+        }
+    }
+
+    protected fun updateAuthParams(requestConfig: RequestConfig) {
+        if (requestConfig.headers["api_key"].isNullOrEmpty()) {
+            if (apiKey["api_key"] != null) {
+                if (apiKeyPrefix["api_key"] != null) {
+                    requestConfig.headers["api_key"] = apiKeyPrefix["api_key"]!! + " " + apiKey["api_key"]!!
+                } else {
+                    requestConfig.headers["api_key"] = apiKey["api_key"]!!
+                }
+            }
+        }
+        if (requestConfig.headers[Authorization].isNullOrEmpty()) {
+            requestConfig.headers[Authorization] = "Bearer " + accessToken
+        }
+    }
+
+    protected inline fun <reified T: Any?> request(requestConfig: RequestConfig, body : Any? = null): ApiInfrastructureResponse<T?> {
+        val httpUrl = baseUrl.toHttpUrlOrNull() ?: throw IllegalStateException("baseUrl is invalid.")
+
+        // take authMethod from operation
+        updateAuthParams(requestConfig)
+
+        val url = httpUrl.newBuilder()
+            .addPathSegments(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.headers[ContentType].isNullOrEmpty()) {
+            requestConfig.headers[ContentType] = JsonMediaType
+        }
+        if (requestConfig.headers[Accept].isNullOrEmpty()) {
+            requestConfig.headers[Accept] = JsonMediaType
+        }
+        val headers = requestConfig.headers
+
+        if(headers[ContentType] ?: "" == "") {
+            throw kotlin.IllegalStateException("Missing Content-Type header. This is required.")
+        }
+
+        if(headers[Accept] ?: "" == "") {
+            throw kotlin.IllegalStateException("Missing Accept header. This is required.")
+        }
+
+        // TODO: support multiple contentType options here.
+        val contentType = (headers[ContentType] as String).substringBefore(";").toLowerCase()
+
+        val request = when (requestConfig.method) {
+            RequestMethod.DELETE -> Request.Builder().url(url).delete(requestBody(body, contentType))
+            RequestMethod.GET -> Request.Builder().url(url)
+            RequestMethod.HEAD -> Request.Builder().url(url).head()
+            RequestMethod.PATCH -> Request.Builder().url(url).patch(requestBody(body, contentType))
+            RequestMethod.PUT -> Request.Builder().url(url).put(requestBody(body, contentType))
+            RequestMethod.POST -> Request.Builder().url(url).post(requestBody(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(";")?.toLowerCase()
+
+        // TODO: handle specific mapping types. e.g. Map<int, Class<?>>
+        when {
+            response.isRedirect -> return Redirection(
+                    response.code,
+                    response.headers.toMultimap()
+            )
+            response.isInformational -> return Informational(
+                    response.message,
+                    response.code,
+                    response.headers.toMultimap()
+            )
+            response.isSuccessful -> return Success(
+                    responseBody(response.body, accept),
+                    response.code,
+                    response.headers.toMultimap()
+            )
+            response.isClientError -> return ClientError(
+                    response.body?.string(),
+                    response.code,
+                    response.headers.toMultimap()
+            )
+            else -> return ServerError(
+                    null,
+                    response.body?.string(),
+                    response.code,
+                    response.headers.toMultimap()
+            )
+        }
+    }
+}

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

@@ -0,0 +1,40 @@
+package org.openapitools.client.infrastructure
+
+internal enum class ResponseType {
+    Success, Informational, Redirection, ClientError, ServerError
+}
+
+internal abstract class ApiInfrastructureResponse<T>(val responseType: ResponseType) {
+    abstract val statusCode: Int
+    abstract val headers: Map<String,List<String>>
+}
+
+internal class Success<T>(
+    val data: T,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+): ApiInfrastructureResponse<T>(ResponseType.Success)
+
+internal class Informational<T>(
+    val statusText: String,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+) : ApiInfrastructureResponse<T>(ResponseType.Informational)
+
+internal class Redirection<T>(
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+) : ApiInfrastructureResponse<T>(ResponseType.Redirection)
+
+internal class ClientError<T>(
+    val body: Any? = null,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>> = mapOf()
+) : ApiInfrastructureResponse<T>(ResponseType.ClientError)
+
+internal class ServerError<T>(
+    val message: String? = null,
+    val body: Any? = null,
+    override val statusCode: Int = -1,
+    override val headers: Map<String, List<String>>
+): ApiInfrastructureResponse<T>(ResponseType.ServerError)

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

@@ -0,0 +1,29 @@
+package org.openapitools.client.infrastructure
+
+import kotlin.properties.ReadWriteProperty
+import kotlin.reflect.KProperty
+
+internal object ApplicationDelegates {
+    /**
+     * Provides a property delegate, allowing the property to be set once and only once.
+     *
+     * If unset (no default value), a get on the property will throw [IllegalStateException].
+     */
+    fun <T> setOnce(defaultValue: T? = null) : ReadWriteProperty<Any?, T> = SetOnce(defaultValue)
+
+    private class SetOnce<T>(defaultValue: T? = null) : ReadWriteProperty<Any?, T> {
+        private var isSet = false
+        private var value: T? = defaultValue
+
+        override fun getValue(thisRef: Any?, property: KProperty<*>): T {
+            return value ?: throw IllegalStateException("${property.name} not initialized")
+        }
+
+        override fun setValue(thisRef: Any?, property: KProperty<*>, value: T) = synchronized(this) {
+            if (!isSet) {
+                this.value = value
+                isSet = true
+            }
+        }
+    }
+}

samples/client/petstore/kotlin-nonpublic/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
+
+internal class ByteArrayAdapter {
+    @ToJson
+    fun toJson(data: ByteArray): String = String(data)
+
+    @FromJson
+    fun fromJson(data: String): ByteArray = data.toByteArray()
+}

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

@@ -0,0 +1,42 @@
+@file:Suppress("unused")
+package org.openapitools.client.infrastructure
+
+import java.lang.RuntimeException
+
+internal open class ClientException : RuntimeException {
+
+    /**
+     * Constructs an [ClientException] with no detail message.
+     */
+    constructor() : super()
+
+    /**
+     * Constructs an [ClientException] with the specified detail message.
+
+     * @param   message   the detail message.
+     */
+    constructor(message: kotlin.String) : super(message)
+
+    internal companion object {
+        private const val serialVersionUID: Long = 123L
+    }
+}
+
+internal open class ServerException : RuntimeException {
+
+    /**
+     * Constructs an [ServerException] with no detail message.
+     */
+    constructor() : super()
+
+    /**
+     * Constructs an [ServerException] with the specified detail message.
+
+     * @param   message   the detail message.
+     */
+    constructor(message: kotlin.String) : super(message)
+
+    internal companion object {
+        private const val serialVersionUID: Long = 456L
+    }
+}

samples/client/petstore/kotlin-nonpublic/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
+
+internal 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)
+    }
+
+}

samples/client/petstore/kotlin-nonpublic/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
+
+internal 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)
+    }
+
+}

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

@@ -0,0 +1,16 @@
+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.
+ */
+internal data class RequestConfig(
+    val method: RequestMethod,
+    val path: String,
+    val headers: MutableMap<String, String> = mutableMapOf(),
+    val query: Map<String, List<String>> = mapOf()
+)

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

@@ -0,0 +1,8 @@
+package org.openapitools.client.infrastructure
+
+/**
+ * Provides enumerated HTTP verbs
+ */
+internal enum class RequestMethod {
+    GET, DELETE, HEAD, OPTIONS, PATCH, POST, PUT
+}

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

@@ -0,0 +1,23 @@
+package org.openapitools.client.infrastructure
+
+import okhttp3.Response
+
+/**
+ * Provides an extension to evaluation whether the response is a 1xx code
+ */
+internal val Response.isInformational : Boolean get() = this.code in 100..199
+
+/**
+ * Provides an extension to evaluation whether the response is a 3xx code
+ */
+internal val Response.isRedirect : Boolean get() = this.code in 300..399
+
+/**
+ * Provides an extension to evaluation whether the response is a 4xx code
+ */
+internal 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
+ */
+internal val Response.isServerError : Boolean get() = this.code in 500..999

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

@@ -0,0 +1,18 @@
+package org.openapitools.client.infrastructure
+
+import com.squareup.moshi.Moshi
+import com.squareup.moshi.adapters.Rfc3339DateJsonAdapter
+import com.squareup.moshi.kotlin.reflect.KotlinJsonAdapterFactory
+import java.util.Date
+
+internal object Serializer {
+    @JvmStatic
+    val moshi: Moshi = Moshi.Builder()
+        .add(Date::class.java, Rfc3339DateJsonAdapter().nullSafe())
+        .add(LocalDateTimeAdapter())
+        .add(LocalDateAdapter())
+        .add(UUIDAdapter())
+        .add(ByteArrayAdapter())
+        .add(KotlinJsonAdapterFactory())
+        .build()
+}

samples/client/petstore/kotlin-nonpublic/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
+
+internal class UUIDAdapter {
+    @ToJson
+    fun toJson(uuid: UUID) = uuid.toString()
+
+    @FromJson
+    fun fromJson(s: String) = UUID.fromString(s)
+}

samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/models/ApiResponse.kt

@@ -0,0 +1,33 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.client.models
+
+
+import com.squareup.moshi.Json
+/**
+ * Describes the result of uploading an image resource
+ * @param code 
+ * @param type 
+ * @param message 
+ */
+
+internal data class ApiResponse (
+    @Json(name = "code")
+    val code: kotlin.Int? = null,
+    @Json(name = "type")
+    val type: kotlin.String? = null,
+    @Json(name = "message")
+    val message: kotlin.String? = null
+) 
+
+
+

samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/models/Category.kt

@@ -0,0 +1,30 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.client.models
+
+
+import com.squareup.moshi.Json
+/**
+ * A category for a pet
+ * @param id 
+ * @param name 
+ */
+
+internal data class Category (
+    @Json(name = "id")
+    val id: kotlin.Long? = null,
+    @Json(name = "name")
+    val name: kotlin.String? = null
+) 
+
+
+

samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/models/Order.kt

@@ -0,0 +1,55 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.client.models
+
+
+import com.squareup.moshi.Json
+/**
+ * An order for a pets from the pet store
+ * @param id 
+ * @param petId 
+ * @param quantity 
+ * @param shipDate 
+ * @param status Order Status
+ * @param complete 
+ */
+
+internal data class Order (
+    @Json(name = "id")
+    val id: kotlin.Long? = null,
+    @Json(name = "petId")
+    val petId: kotlin.Long? = null,
+    @Json(name = "quantity")
+    val quantity: kotlin.Int? = null,
+    @Json(name = "shipDate")
+    val shipDate: java.time.LocalDateTime? = null,
+    /* Order Status */
+    @Json(name = "status")
+    val status: Order.Status? = null,
+    @Json(name = "complete")
+    val complete: kotlin.Boolean? = null
+) 
+
+
+{
+    /**
+    * Order Status
+    * Values: placed,approved,delivered
+    */
+    
+    internal enum class Status(val value: kotlin.String){
+        @Json(name = "placed") placed("placed"),
+        @Json(name = "approved") approved("approved"),
+        @Json(name = "delivered") delivered("delivered");
+    }
+}
+

samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/models/Pet.kt

@@ -0,0 +1,57 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.client.models
+
+import org.openapitools.client.models.Category
+import org.openapitools.client.models.Tag
+
+import com.squareup.moshi.Json
+/**
+ * A pet for sale in the pet store
+ * @param id 
+ * @param category 
+ * @param name 
+ * @param photoUrls 
+ * @param tags 
+ * @param status pet status in the store
+ */
+
+internal data class Pet (
+    @Json(name = "name")
+    val name: kotlin.String,
+    @Json(name = "photoUrls")
+    val photoUrls: kotlin.Array<kotlin.String>,
+    @Json(name = "id")
+    val id: kotlin.Long? = null,
+    @Json(name = "category")
+    val category: Category? = null,
+    @Json(name = "tags")
+    val tags: kotlin.Array<Tag>? = null,
+    /* pet status in the store */
+    @Json(name = "status")
+    val status: Pet.Status? = null
+) 
+
+
+{
+    /**
+    * pet status in the store
+    * Values: available,pending,sold
+    */
+    
+    internal enum class Status(val value: kotlin.String){
+        @Json(name = "available") available("available"),
+        @Json(name = "pending") pending("pending"),
+        @Json(name = "sold") sold("sold");
+    }
+}
+

samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/models/Tag.kt

@@ -0,0 +1,30 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.client.models
+
+
+import com.squareup.moshi.Json
+/**
+ * A tag for a pet
+ * @param id 
+ * @param name 
+ */
+
+internal data class Tag (
+    @Json(name = "id")
+    val id: kotlin.Long? = null,
+    @Json(name = "name")
+    val name: kotlin.String? = null
+) 
+
+
+

samples/client/petstore/kotlin-nonpublic/src/main/kotlin/org/openapitools/client/models/User.kt

@@ -0,0 +1,49 @@
+/**
+* OpenAPI Petstore
+* This is a sample server Petstore server. For this sample, you can use the api key `special-key` to test the authorization filters.
+*
+* The version of the OpenAPI document: 1.0.0
+* 
+*
+* NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+* https://openapi-generator.tech
+* Do not edit the class manually.
+*/
+package org.openapitools.client.models
+
+
+import com.squareup.moshi.Json
+/**
+ * A User who is purchasing from the pet store
+ * @param id 
+ * @param username 
+ * @param firstName 
+ * @param lastName 
+ * @param email 
+ * @param password 
+ * @param phone 
+ * @param userStatus User Status
+ */
+
+internal data class User (
+    @Json(name = "id")
+    val id: kotlin.Long? = null,
+    @Json(name = "username")
+    val username: kotlin.String? = null,
+    @Json(name = "firstName")
+    val firstName: kotlin.String? = null,
+    @Json(name = "lastName")
+    val lastName: kotlin.String? = null,
+    @Json(name = "email")
+    val email: kotlin.String? = null,
+    @Json(name = "password")
+    val password: kotlin.String? = null,
+    @Json(name = "phone")
+    val phone: kotlin.String? = null,
+    /* User Status */
+    @Json(name = "userStatus")
+    val userStatus: kotlin.Int? = null
+) 
+
+
+