[Go] fix unused bytes import for anyOf and oneOf models (#17775)

* add sample spec for oneof and anyof with required properties

* omit bytes import for oneOf and anyOf models

* generate sample client for new spec

bin/configs/go-oneof-anyof-required.yaml

@@ -0,0 +1,5 @@
+generatorName: go
+outputDir: samples/client/others/go/oneof-anyof-required
+inputSpec: modules/openapi-generator/src/test/resources/3_0/go/spec-with-oneof-anyof-required.yaml
+additionalProperties:
+  hideGenerationTimestamp: "true"

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

@@ -500,7 +500,9 @@ public class GoClientCodegen extends AbstractGoCodegen {
             }
 
             if (model.hasRequired) {
-                if (!model.isAdditionalPropertiesTrue) {
+                if (!model.isAdditionalPropertiesTrue &&
+                    (model.oneOf == null || model.oneOf.isEmpty()) &&
+                    (model.anyOf == null || model.anyOf.isEmpty())) {
                     imports.add(createMapping("import", "bytes"));
                 }
 

modules/openapi-generator/src/test/resources/3_0/go/spec-with-oneof-anyof-required.yaml

@@ -0,0 +1,29 @@
+openapi: 3.0.0
+info:
+  title: Test
+  version: 1.0.0
+paths: {}
+components:
+  schemas:
+    NestedObject1:
+      required:
+        - field1
+      properties:
+        field1:
+          description: Specifies an action name to be used with the Android Intent class.
+          type: string
+    NestedObject2:
+      required:
+        - field2
+      properties:
+        field2:
+          description: Specifies an action name to be used with the Android Intent class.
+          type: string
+    Object:
+      oneOf:
+        - $ref: '#/components/schemas/NestedObject1'
+        - $ref: '#/components/schemas/NestedObject2'
+    Object2:
+      anyOf:
+        - $ref: '#/components/schemas/NestedObject1'
+        - $ref: '#/components/schemas/NestedObject2'

samples/client/others/go/oneof-anyof-required/.gitignore

@@ -0,0 +1,24 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
+*.prof

samples/client/others/go/oneof-anyof-required/.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/others/go/oneof-anyof-required/.openapi-generator/FILES

@@ -0,0 +1,19 @@
+.gitignore
+.travis.yml
+README.md
+api/openapi.yaml
+client.go
+configuration.go
+docs/NestedObject1.md
+docs/NestedObject2.md
+docs/Object.md
+docs/Object2.md
+git_push.sh
+go.mod
+go.sum
+model_nested_object1.go
+model_nested_object2.go
+model_object.go
+model_object2.go
+response.go
+utils.go

samples/client/others/go/oneof-anyof-required/.openapi-generator/VERSION

@@ -0,0 +1 @@
+7.3.0-SNAPSHOT

samples/client/others/go/oneof-anyof-required/.travis.yml

@@ -0,0 +1,8 @@
+language: go
+
+install:
+  - go get -d -v .
+
+script:
+  - go build -v ./
+

samples/client/others/go/oneof-anyof-required/README.md

@@ -0,0 +1,113 @@
+# Go API client for openapi
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+## Overview
+This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.  By using the [OpenAPI-spec](https://www.openapis.org/) from a remote server, you can easily generate an API client.
+
+- API version: 1.0.0
+- Package version: 1.0.0
+- Build package: org.openapitools.codegen.languages.GoClientCodegen
+
+## Installation
+
+Install the following dependencies:
+
+```sh
+go get github.com/stretchr/testify/assert
+go get golang.org/x/net/context
+```
+
+Put the package under your project folder and add the following in import:
+
+```go
+import openapi "github.com/GIT_USER_ID/GIT_REPO_ID"
+```
+
+To use a proxy, set the environment variable `HTTP_PROXY`:
+
+```go
+os.Setenv("HTTP_PROXY", "http://proxy_name:proxy_port")
+```
+
+## Configuration of Server URL
+
+Default configuration comes with `Servers` field that contains server objects as defined in the OpenAPI specification.
+
+### Select Server Configuration
+
+For using other server than the one defined on index 0 set context value `openapi.ContextServerIndex` of type `int`.
+
+```go
+ctx := context.WithValue(context.Background(), openapi.ContextServerIndex, 1)
+```
+
+### Templated Server URL
+
+Templated server URL is formatted using default variables from configuration or from context value `openapi.ContextServerVariables` of type `map[string]string`.
+
+```go
+ctx := context.WithValue(context.Background(), openapi.ContextServerVariables, map[string]string{
+	"basePath": "v2",
+})
+```
+
+Note, enum values are always validated and all unused variables are silently ignored.
+
+### URLs Configuration per Operation
+
+Each operation can use different server URL defined using `OperationServers` map in the `Configuration`.
+An operation is uniquely identified by `"{classname}Service.{nickname}"` string.
+Similar rules for overriding default operation server index and variables applies by using `openapi.ContextOperationServerIndices` and `openapi.ContextOperationServerVariables` context maps.
+
+```go
+ctx := context.WithValue(context.Background(), openapi.ContextOperationServerIndices, map[string]int{
+	"{classname}Service.{nickname}": 2,
+})
+ctx = context.WithValue(context.Background(), openapi.ContextOperationServerVariables, map[string]map[string]string{
+	"{classname}Service.{nickname}": {
+		"port": "8443",
+	},
+})
+```
+
+## Documentation for API Endpoints
+
+All URIs are relative to *http://localhost*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+
+
+## Documentation For Models
+
+ - [NestedObject1](docs/NestedObject1.md)
+ - [NestedObject2](docs/NestedObject2.md)
+ - [Object](docs/Object.md)
+ - [Object2](docs/Object2.md)
+
+
+## Documentation For Authorization
+
+Endpoints do not require authorization.
+
+
+## Documentation for Utility Methods
+
+Due to the fact that model structure members are all pointers, this package contains
+a number of utility functions to easily obtain pointers to values of basic types.
+Each of these functions takes a value of the given basic type and returns a pointer to it:
+
+* `PtrBool`
+* `PtrInt`
+* `PtrInt32`
+* `PtrInt64`
+* `PtrFloat`
+* `PtrFloat32`
+* `PtrFloat64`
+* `PtrString`
+* `PtrTime`
+
+## Author
+
+

samples/client/others/go/oneof-anyof-required/api/openapi.yaml

@@ -0,0 +1,33 @@
+openapi: 3.0.0
+info:
+  title: Test
+  version: 1.0.0
+servers:
+- url: /
+paths: {}
+components:
+  schemas:
+    NestedObject1:
+      properties:
+        field1:
+          description: Specifies an action name to be used with the Android Intent
+            class.
+          type: string
+      required:
+      - field1
+    NestedObject2:
+      properties:
+        field2:
+          description: Specifies an action name to be used with the Android Intent
+            class.
+          type: string
+      required:
+      - field2
+    Object:
+      oneOf:
+      - $ref: '#/components/schemas/NestedObject1'
+      - $ref: '#/components/schemas/NestedObject2'
+    Object2:
+      anyOf:
+      - $ref: '#/components/schemas/NestedObject1'
+      - $ref: '#/components/schemas/NestedObject2'

samples/client/others/go/oneof-anyof-required/client.go

@@ -0,0 +1,657 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"io"
+	"log"
+	"mime/multipart"
+	"net/http"
+	"net/http/httputil"
+	"net/url"
+	"os"
+	"path/filepath"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+)
+
+var (
+	JsonCheck       = regexp.MustCompile(`(?i:(?:application|text)/(?:[^;]+\+)?json)`)
+	XmlCheck        = regexp.MustCompile(`(?i:(?:application|text)/(?:[^;]+\+)?xml)`)
+	queryParamSplit = regexp.MustCompile(`(^|&)([^&]+)`)
+	queryDescape    = strings.NewReplacer( "%5B", "[", "%5D", "]" )
+)
+
+// APIClient manages communication with the Test API v1.0.0
+// In most cases there should be only one, shared, APIClient.
+type APIClient struct {
+	cfg    *Configuration
+	common service // Reuse a single struct instead of allocating one for each service on the heap.
+
+	// API Services
+}
+
+type service struct {
+	client *APIClient
+}
+
+// NewAPIClient creates a new API client. Requires a userAgent string describing your application.
+// optionally a custom http.Client to allow for advanced features such as caching.
+func NewAPIClient(cfg *Configuration) *APIClient {
+	if cfg.HTTPClient == nil {
+		cfg.HTTPClient = http.DefaultClient
+	}
+
+	c := &APIClient{}
+	c.cfg = cfg
+	c.common.client = c
+
+	// API Services
+
+	return c
+}
+
+func atoi(in string) (int, error) {
+	return strconv.Atoi(in)
+}
+
+// selectHeaderContentType select a content type from the available list.
+func selectHeaderContentType(contentTypes []string) string {
+	if len(contentTypes) == 0 {
+		return ""
+	}
+	if contains(contentTypes, "application/json") {
+		return "application/json"
+	}
+	return contentTypes[0] // use the first content type specified in 'consumes'
+}
+
+// selectHeaderAccept join all accept types and return
+func selectHeaderAccept(accepts []string) string {
+	if len(accepts) == 0 {
+		return ""
+	}
+
+	if contains(accepts, "application/json") {
+		return "application/json"
+	}
+
+	return strings.Join(accepts, ",")
+}
+
+// contains is a case insensitive match, finding needle in a haystack
+func contains(haystack []string, needle string) bool {
+	for _, a := range haystack {
+		if strings.EqualFold(a, needle) {
+			return true
+		}
+	}
+	return false
+}
+
+// Verify optional parameters are of the correct type.
+func typeCheckParameter(obj interface{}, expected string, name string) error {
+	// Make sure there is an object.
+	if obj == nil {
+		return nil
+	}
+
+	// Check the type is as expected.
+	if reflect.TypeOf(obj).String() != expected {
+		return fmt.Errorf("expected %s to be of type %s but received %s", name, expected, reflect.TypeOf(obj).String())
+	}
+	return nil
+}
+
+func parameterValueToString( obj interface{}, key string ) string {
+	if reflect.TypeOf(obj).Kind() != reflect.Ptr {
+		return fmt.Sprintf("%v", obj)
+	}
+	var param,ok = obj.(MappedNullable)
+	if !ok {
+		return ""
+	}
+	dataMap,err := param.ToMap()
+	if err != nil {
+		return ""
+	}
+	return fmt.Sprintf("%v", dataMap[key])
+}
+
+// parameterAddToHeaderOrQuery adds the provided object to the request header or url query
+// supporting deep object syntax
+func parameterAddToHeaderOrQuery(headerOrQueryParams interface{}, keyPrefix string, obj interface{}, collectionType string) {
+	var v = reflect.ValueOf(obj)
+	var value = ""
+	if v == reflect.ValueOf(nil) {
+		value = "null"
+	} else {
+		switch v.Kind() {
+			case reflect.Invalid:
+				value = "invalid"
+
+			case reflect.Struct:
+				if t,ok := obj.(MappedNullable); ok {
+					dataMap,err := t.ToMap()
+					if err != nil {
+						return
+					}
+					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, dataMap, collectionType)
+					return
+				}
+				if t, ok := obj.(time.Time); ok {
+					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, t.Format(time.RFC3339), collectionType)
+					return
+				}
+				value = v.Type().String() + " value"
+			case reflect.Slice:
+				var indValue = reflect.ValueOf(obj)
+				if indValue == reflect.ValueOf(nil) {
+					return
+				}
+				var lenIndValue = indValue.Len()
+				for i:=0;i<lenIndValue;i++ {
+					var arrayValue = indValue.Index(i)
+					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, arrayValue.Interface(), collectionType)
+				}
+				return
+
+			case reflect.Map:
+				var indValue = reflect.ValueOf(obj)
+				if indValue == reflect.ValueOf(nil) {
+					return
+				}
+				iter := indValue.MapRange()
+				for iter.Next() {
+					k,v := iter.Key(), iter.Value()
+					parameterAddToHeaderOrQuery(headerOrQueryParams, fmt.Sprintf("%s[%s]", keyPrefix, k.String()), v.Interface(), collectionType)
+				}
+				return
+
+			case reflect.Interface:
+				fallthrough
+			case reflect.Ptr:
+				parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, v.Elem().Interface(), collectionType)
+				return
+
+			case reflect.Int, reflect.Int8, reflect.Int16,
+				reflect.Int32, reflect.Int64:
+				value = strconv.FormatInt(v.Int(), 10)
+			case reflect.Uint, reflect.Uint8, reflect.Uint16,
+				reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+				value = strconv.FormatUint(v.Uint(), 10)
+			case reflect.Float32, reflect.Float64:
+				value = strconv.FormatFloat(v.Float(), 'g', -1, 32)
+			case reflect.Bool:
+				value = strconv.FormatBool(v.Bool())
+			case reflect.String:
+				value = v.String()
+			default:
+				value = v.Type().String() + " value"
+		}
+	}
+
+	switch valuesMap := headerOrQueryParams.(type) {
+		case url.Values:
+			if collectionType == "csv" && valuesMap.Get(keyPrefix) != "" {
+				valuesMap.Set(keyPrefix, valuesMap.Get(keyPrefix) + "," + value)
+			} else {
+				valuesMap.Add(keyPrefix, value)
+			}
+			break
+		case map[string]string:
+			valuesMap[keyPrefix] = value
+			break
+	}
+}
+
+// helper for converting interface{} parameters to json strings
+func parameterToJson(obj interface{}) (string, error) {
+	jsonBuf, err := json.Marshal(obj)
+	if err != nil {
+		return "", err
+	}
+	return string(jsonBuf), err
+}
+
+// callAPI do the request.
+func (c *APIClient) callAPI(request *http.Request) (*http.Response, error) {
+	if c.cfg.Debug {
+		dump, err := httputil.DumpRequestOut(request, true)
+		if err != nil {
+			return nil, err
+		}
+		log.Printf("\n%s\n", string(dump))
+	}
+
+	resp, err := c.cfg.HTTPClient.Do(request)
+	if err != nil {
+		return resp, err
+	}
+
+	if c.cfg.Debug {
+		dump, err := httputil.DumpResponse(resp, true)
+		if err != nil {
+			return resp, err
+		}
+		log.Printf("\n%s\n", string(dump))
+	}
+	return resp, err
+}
+
+// Allow modification of underlying config for alternate implementations and testing
+// Caution: modifying the configuration while live can cause data races and potentially unwanted behavior
+func (c *APIClient) GetConfig() *Configuration {
+	return c.cfg
+}
+
+type formFile struct {
+		fileBytes []byte
+		fileName string
+		formFileName string
+}
+
+// prepareRequest build the request
+func (c *APIClient) prepareRequest(
+	ctx context.Context,
+	path string, method string,
+	postBody interface{},
+	headerParams map[string]string,
+	queryParams url.Values,
+	formParams url.Values,
+	formFiles []formFile) (localVarRequest *http.Request, err error) {
+
+	var body *bytes.Buffer
+
+	// Detect postBody type and post.
+	if postBody != nil {
+		contentType := headerParams["Content-Type"]
+		if contentType == "" {
+			contentType = detectContentType(postBody)
+			headerParams["Content-Type"] = contentType
+		}
+
+		body, err = setBody(postBody, contentType)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// add form parameters and file if available.
+	if strings.HasPrefix(headerParams["Content-Type"], "multipart/form-data") && len(formParams) > 0 || (len(formFiles) > 0) {
+		if body != nil {
+			return nil, errors.New("Cannot specify postBody and multipart form at the same time.")
+		}
+		body = &bytes.Buffer{}
+		w := multipart.NewWriter(body)
+
+		for k, v := range formParams {
+			for _, iv := range v {
+				if strings.HasPrefix(k, "@") { // file
+					err = addFile(w, k[1:], iv)
+					if err != nil {
+						return nil, err
+					}
+				} else { // form value
+					w.WriteField(k, iv)
+				}
+			}
+		}
+		for _, formFile := range formFiles {
+			if len(formFile.fileBytes) > 0 && formFile.fileName != "" {
+				w.Boundary()
+				part, err := w.CreateFormFile(formFile.formFileName, filepath.Base(formFile.fileName))
+				if err != nil {
+						return nil, err
+				}
+				_, err = part.Write(formFile.fileBytes)
+				if err != nil {
+						return nil, err
+				}
+			}
+		}
+
+		// Set the Boundary in the Content-Type
+		headerParams["Content-Type"] = w.FormDataContentType()
+
+		// Set Content-Length
+		headerParams["Content-Length"] = fmt.Sprintf("%d", body.Len())
+		w.Close()
+	}
+
+	if strings.HasPrefix(headerParams["Content-Type"], "application/x-www-form-urlencoded") && len(formParams) > 0 {
+		if body != nil {
+			return nil, errors.New("Cannot specify postBody and x-www-form-urlencoded form at the same time.")
+		}
+		body = &bytes.Buffer{}
+		body.WriteString(formParams.Encode())
+		// Set Content-Length
+		headerParams["Content-Length"] = fmt.Sprintf("%d", body.Len())
+	}
+
+	// Setup path and query parameters
+	url, err := url.Parse(path)
+	if err != nil {
+		return nil, err
+	}
+
+	// Override request host, if applicable
+	if c.cfg.Host != "" {
+		url.Host = c.cfg.Host
+	}
+
+	// Override request scheme, if applicable
+	if c.cfg.Scheme != "" {
+		url.Scheme = c.cfg.Scheme
+	}
+
+	// Adding Query Param
+	query := url.Query()
+	for k, v := range queryParams {
+		for _, iv := range v {
+			query.Add(k, iv)
+		}
+	}
+
+	// Encode the parameters.
+	url.RawQuery = queryParamSplit.ReplaceAllStringFunc(query.Encode(), func(s string) string {
+		pieces := strings.Split(s, "=")
+		pieces[0] = queryDescape.Replace(pieces[0])
+		return strings.Join(pieces, "=")
+	})
+
+	// Generate a new request
+	if body != nil {
+		localVarRequest, err = http.NewRequest(method, url.String(), body)
+	} else {
+		localVarRequest, err = http.NewRequest(method, url.String(), nil)
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	// add header parameters, if any
+	if len(headerParams) > 0 {
+		headers := http.Header{}
+		for h, v := range headerParams {
+			headers[h] = []string{v}
+		}
+		localVarRequest.Header = headers
+	}
+
+	// Add the user agent to the request.
+	localVarRequest.Header.Add("User-Agent", c.cfg.UserAgent)
+
+	if ctx != nil {
+		// add context to the request
+		localVarRequest = localVarRequest.WithContext(ctx)
+
+		// Walk through any authentication.
+
+	}
+
+	for header, value := range c.cfg.DefaultHeader {
+		localVarRequest.Header.Add(header, value)
+	}
+	return localVarRequest, nil
+}
+
+func (c *APIClient) decode(v interface{}, b []byte, contentType string) (err error) {
+	if len(b) == 0 {
+		return nil
+	}
+	if s, ok := v.(*string); ok {
+		*s = string(b)
+		return nil
+	}
+	if f, ok := v.(*os.File); ok {
+		f, err = os.CreateTemp("", "HttpClientFile")
+		if err != nil {
+			return
+		}
+		_, err = f.Write(b)
+		if err != nil {
+			return
+		}
+		_, err = f.Seek(0, io.SeekStart)
+		return
+	}
+	if f, ok := v.(**os.File); ok {
+		*f, err = os.CreateTemp("", "HttpClientFile")
+		if err != nil {
+			return
+		}
+		_, err = (*f).Write(b)
+		if err != nil {
+			return
+		}
+		_, err = (*f).Seek(0, io.SeekStart)
+		return
+	}
+	if XmlCheck.MatchString(contentType) {
+		if err = xml.Unmarshal(b, v); err != nil {
+			return err
+		}
+		return nil
+	}
+	if JsonCheck.MatchString(contentType) {
+		if actualObj, ok := v.(interface{ GetActualInstance() interface{} }); ok { // oneOf, anyOf schemas
+			if unmarshalObj, ok := actualObj.(interface{ UnmarshalJSON([]byte) error }); ok { // make sure it has UnmarshalJSON defined
+				if err = unmarshalObj.UnmarshalJSON(b); err != nil {
+					return err
+				}
+			} else {
+				return errors.New("Unknown type with GetActualInstance but no unmarshalObj.UnmarshalJSON defined")
+			}
+		} else if err = json.Unmarshal(b, v); err != nil { // simple model
+			return err
+		}
+		return nil
+	}
+	return errors.New("undefined response type")
+}
+
+// Add a file to the multipart request
+func addFile(w *multipart.Writer, fieldName, path string) error {
+	file, err := os.Open(filepath.Clean(path))
+	if err != nil {
+		return err
+	}
+	err = file.Close()
+	if err != nil {
+		return err
+	}
+
+	part, err := w.CreateFormFile(fieldName, filepath.Base(path))
+	if err != nil {
+		return err
+	}
+	_, err = io.Copy(part, file)
+
+	return err
+}
+
+// Prevent trying to import "fmt"
+func reportError(format string, a ...interface{}) error {
+	return fmt.Errorf(format, a...)
+}
+
+// A wrapper for strict JSON decoding
+func newStrictDecoder(data []byte) *json.Decoder {
+	dec := json.NewDecoder(bytes.NewBuffer(data))
+	dec.DisallowUnknownFields()
+	return dec
+}
+
+// Set request body from an interface{}
+func setBody(body interface{}, contentType string) (bodyBuf *bytes.Buffer, err error) {
+	if bodyBuf == nil {
+		bodyBuf = &bytes.Buffer{}
+	}
+
+	if reader, ok := body.(io.Reader); ok {
+		_, err = bodyBuf.ReadFrom(reader)
+	} else if fp, ok := body.(*os.File); ok {
+		_, err = bodyBuf.ReadFrom(fp)
+	} else if b, ok := body.([]byte); ok {
+		_, err = bodyBuf.Write(b)
+	} else if s, ok := body.(string); ok {
+		_, err = bodyBuf.WriteString(s)
+	} else if s, ok := body.(*string); ok {
+		_, err = bodyBuf.WriteString(*s)
+	} else if JsonCheck.MatchString(contentType) {
+		err = json.NewEncoder(bodyBuf).Encode(body)
+	} else if XmlCheck.MatchString(contentType) {
+		var bs []byte
+		bs, err = xml.Marshal(body)
+		if err == nil {
+			bodyBuf.Write(bs)
+		}
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	if bodyBuf.Len() == 0 {
+		err = fmt.Errorf("invalid body type %s\n", contentType)
+		return nil, err
+	}
+	return bodyBuf, nil
+}
+
+// detectContentType method is used to figure out `Request.Body` content type for request header
+func detectContentType(body interface{}) string {
+	contentType := "text/plain; charset=utf-8"
+	kind := reflect.TypeOf(body).Kind()
+
+	switch kind {
+	case reflect.Struct, reflect.Map, reflect.Ptr:
+		contentType = "application/json; charset=utf-8"
+	case reflect.String:
+		contentType = "text/plain; charset=utf-8"
+	default:
+		if b, ok := body.([]byte); ok {
+			contentType = http.DetectContentType(b)
+		} else if kind == reflect.Slice {
+			contentType = "application/json; charset=utf-8"
+		}
+	}
+
+	return contentType
+}
+
+// Ripped from https://github.com/gregjones/httpcache/blob/master/httpcache.go
+type cacheControl map[string]string
+
+func parseCacheControl(headers http.Header) cacheControl {
+	cc := cacheControl{}
+	ccHeader := headers.Get("Cache-Control")
+	for _, part := range strings.Split(ccHeader, ",") {
+		part = strings.Trim(part, " ")
+		if part == "" {
+			continue
+		}
+		if strings.ContainsRune(part, '=') {
+			keyval := strings.Split(part, "=")
+			cc[strings.Trim(keyval[0], " ")] = strings.Trim(keyval[1], ",")
+		} else {
+			cc[part] = ""
+		}
+	}
+	return cc
+}
+
+// CacheExpires helper function to determine remaining time before repeating a request.
+func CacheExpires(r *http.Response) time.Time {
+	// Figure out when the cache expires.
+	var expires time.Time
+	now, err := time.Parse(time.RFC1123, r.Header.Get("date"))
+	if err != nil {
+		return time.Now()
+	}
+	respCacheControl := parseCacheControl(r.Header)
+
+	if maxAge, ok := respCacheControl["max-age"]; ok {
+		lifetime, err := time.ParseDuration(maxAge + "s")
+		if err != nil {
+			expires = now
+		} else {
+			expires = now.Add(lifetime)
+		}
+	} else {
+		expiresHeader := r.Header.Get("Expires")
+		if expiresHeader != "" {
+			expires, err = time.Parse(time.RFC1123, expiresHeader)
+			if err != nil {
+				expires = now
+			}
+		}
+	}
+	return expires
+}
+
+func strlen(s string) int {
+	return utf8.RuneCountInString(s)
+}
+
+// GenericOpenAPIError Provides access to the body, error and model on returned errors.
+type GenericOpenAPIError struct {
+	body  []byte
+	error string
+	model interface{}
+}
+
+// Error returns non-empty string if there was an error.
+func (e GenericOpenAPIError) Error() string {
+	return e.error
+}
+
+// Body returns the raw bytes of the response
+func (e GenericOpenAPIError) Body() []byte {
+	return e.body
+}
+
+// Model returns the unpacked model of the error
+func (e GenericOpenAPIError) Model() interface{} {
+	return e.model
+}
+
+// format error message using title and detail when model implements rfc7807
+func formatErrorMessage(status string, v interface{}) string {
+	str := ""
+	metaValue := reflect.ValueOf(v).Elem()
+
+	if metaValue.Kind() == reflect.Struct {
+		field := metaValue.FieldByName("Title")
+		if field != (reflect.Value{}) {
+			str = fmt.Sprintf("%s", field.Interface())
+		}
+
+		field = metaValue.FieldByName("Detail")
+		if field != (reflect.Value{}) {
+			str = fmt.Sprintf("%s (%s)", str, field.Interface())
+		}
+	}
+
+	return strings.TrimSpace(fmt.Sprintf("%s %s", status, str))
+}

samples/client/others/go/oneof-anyof-required/configuration.go

@@ -0,0 +1,215 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+// contextKeys are used to identify the type of value in the context.
+// Since these are string, it is possible to get a short description of the
+// context key for logging and debugging using key.String().
+
+type contextKey string
+
+func (c contextKey) String() string {
+	return "auth " + string(c)
+}
+
+var (
+	// ContextServerIndex uses a server configuration from the index.
+	ContextServerIndex = contextKey("serverIndex")
+
+	// ContextOperationServerIndices uses a server configuration from the index mapping.
+	ContextOperationServerIndices = contextKey("serverOperationIndices")
+
+	// ContextServerVariables overrides a server configuration variables.
+	ContextServerVariables = contextKey("serverVariables")
+
+	// ContextOperationServerVariables overrides a server configuration variables using operation specific values.
+	ContextOperationServerVariables = contextKey("serverOperationVariables")
+)
+
+// BasicAuth provides basic http authentication to a request passed via context using ContextBasicAuth
+type BasicAuth struct {
+	UserName string `json:"userName,omitempty"`
+	Password string `json:"password,omitempty"`
+}
+
+// APIKey provides API key based authentication to a request passed via context using ContextAPIKey
+type APIKey struct {
+	Key    string
+	Prefix string
+}
+
+// ServerVariable stores the information about a server variable
+type ServerVariable struct {
+	Description  string
+	DefaultValue string
+	EnumValues   []string
+}
+
+// ServerConfiguration stores the information about a server
+type ServerConfiguration struct {
+	URL string
+	Description string
+	Variables map[string]ServerVariable
+}
+
+// ServerConfigurations stores multiple ServerConfiguration items
+type ServerConfigurations []ServerConfiguration
+
+// Configuration stores the configuration of the API client
+type Configuration struct {
+	Host             string            `json:"host,omitempty"`
+	Scheme           string            `json:"scheme,omitempty"`
+	DefaultHeader    map[string]string `json:"defaultHeader,omitempty"`
+	UserAgent        string            `json:"userAgent,omitempty"`
+	Debug            bool              `json:"debug,omitempty"`
+	Servers          ServerConfigurations
+	OperationServers map[string]ServerConfigurations
+	HTTPClient       *http.Client
+}
+
+// NewConfiguration returns a new Configuration object
+func NewConfiguration() *Configuration {
+	cfg := &Configuration{
+		DefaultHeader:    make(map[string]string),
+		UserAgent:        "OpenAPI-Generator/1.0.0/go",
+		Debug:            false,
+		Servers:          ServerConfigurations{
+			{
+				URL: "",
+				Description: "No description provided",
+			},
+		},
+		OperationServers: map[string]ServerConfigurations{
+		},
+	}
+	return cfg
+}
+
+// AddDefaultHeader adds a new HTTP header to the default header in the request
+func (c *Configuration) AddDefaultHeader(key string, value string) {
+	c.DefaultHeader[key] = value
+}
+
+// URL formats template on a index using given variables
+func (sc ServerConfigurations) URL(index int, variables map[string]string) (string, error) {
+	if index < 0 || len(sc) <= index {
+		return "", fmt.Errorf("index %v out of range %v", index, len(sc)-1)
+	}
+	server := sc[index]
+	url := server.URL
+
+	// go through variables and replace placeholders
+	for name, variable := range server.Variables {
+		if value, ok := variables[name]; ok {
+			found := bool(len(variable.EnumValues) == 0)
+			for _, enumValue := range variable.EnumValues {
+				if value == enumValue {
+					found = true
+				}
+			}
+			if !found {
+				return "", fmt.Errorf("the variable %s in the server URL has invalid value %v. Must be %v", name, value, variable.EnumValues)
+			}
+			url = strings.Replace(url, "{"+name+"}", value, -1)
+		} else {
+			url = strings.Replace(url, "{"+name+"}", variable.DefaultValue, -1)
+		}
+	}
+	return url, nil
+}
+
+// ServerURL returns URL based on server settings
+func (c *Configuration) ServerURL(index int, variables map[string]string) (string, error) {
+	return c.Servers.URL(index, variables)
+}
+
+func getServerIndex(ctx context.Context) (int, error) {
+	si := ctx.Value(ContextServerIndex)
+	if si != nil {
+		if index, ok := si.(int); ok {
+			return index, nil
+		}
+		return 0, reportError("Invalid type %T should be int", si)
+	}
+	return 0, nil
+}
+
+func getServerOperationIndex(ctx context.Context, endpoint string) (int, error) {
+	osi := ctx.Value(ContextOperationServerIndices)
+	if osi != nil {
+		if operationIndices, ok := osi.(map[string]int); !ok {
+			return 0, reportError("Invalid type %T should be map[string]int", osi)
+		} else {
+			index, ok := operationIndices[endpoint]
+			if ok {
+				return index, nil
+			}
+		}
+	}
+	return getServerIndex(ctx)
+}
+
+func getServerVariables(ctx context.Context) (map[string]string, error) {
+	sv := ctx.Value(ContextServerVariables)
+	if sv != nil {
+		if variables, ok := sv.(map[string]string); ok {
+			return variables, nil
+		}
+		return nil, reportError("ctx value of ContextServerVariables has invalid type %T should be map[string]string", sv)
+	}
+	return nil, nil
+}
+
+func getServerOperationVariables(ctx context.Context, endpoint string) (map[string]string, error) {
+	osv := ctx.Value(ContextOperationServerVariables)
+	if osv != nil {
+		if operationVariables, ok := osv.(map[string]map[string]string); !ok {
+			return nil, reportError("ctx value of ContextOperationServerVariables has invalid type %T should be map[string]map[string]string", osv)
+		} else {
+			variables, ok := operationVariables[endpoint]
+			if ok {
+				return variables, nil
+			}
+		}
+	}
+	return getServerVariables(ctx)
+}
+
+// ServerURLWithContext returns a new server URL given an endpoint
+func (c *Configuration) ServerURLWithContext(ctx context.Context, endpoint string) (string, error) {
+	sc, ok := c.OperationServers[endpoint]
+	if !ok {
+		sc = c.Servers
+	}
+
+	if ctx == nil {
+		return sc.URL(0, nil)
+	}
+
+	index, err := getServerOperationIndex(ctx, endpoint)
+	if err != nil {
+		return "", err
+	}
+
+	variables, err := getServerOperationVariables(ctx, endpoint)
+	if err != nil {
+		return "", err
+	}
+
+	return sc.URL(index, variables)
+}

samples/client/others/go/oneof-anyof-required/docs/NestedObject1.md

@@ -0,0 +1,51 @@
+# NestedObject1
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Field1** | **string** | Specifies an action name to be used with the Android Intent class. | 
+
+## Methods
+
+### NewNestedObject1
+
+`func NewNestedObject1(field1 string, ) *NestedObject1`
+
+NewNestedObject1 instantiates a new NestedObject1 object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewNestedObject1WithDefaults
+
+`func NewNestedObject1WithDefaults() *NestedObject1`
+
+NewNestedObject1WithDefaults instantiates a new NestedObject1 object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetField1
+
+`func (o *NestedObject1) GetField1() string`
+
+GetField1 returns the Field1 field if non-nil, zero value otherwise.
+
+### GetField1Ok
+
+`func (o *NestedObject1) GetField1Ok() (*string, bool)`
+
+GetField1Ok returns a tuple with the Field1 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField1
+
+`func (o *NestedObject1) SetField1(v string)`
+
+SetField1 sets Field1 field to given value.
+
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/others/go/oneof-anyof-required/docs/NestedObject2.md

@@ -0,0 +1,51 @@
+# NestedObject2
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Field2** | **string** | Specifies an action name to be used with the Android Intent class. | 
+
+## Methods
+
+### NewNestedObject2
+
+`func NewNestedObject2(field2 string, ) *NestedObject2`
+
+NewNestedObject2 instantiates a new NestedObject2 object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewNestedObject2WithDefaults
+
+`func NewNestedObject2WithDefaults() *NestedObject2`
+
+NewNestedObject2WithDefaults instantiates a new NestedObject2 object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetField2
+
+`func (o *NestedObject2) GetField2() string`
+
+GetField2 returns the Field2 field if non-nil, zero value otherwise.
+
+### GetField2Ok
+
+`func (o *NestedObject2) GetField2Ok() (*string, bool)`
+
+GetField2Ok returns a tuple with the Field2 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField2
+
+`func (o *NestedObject2) SetField2(v string)`
+
+SetField2 sets Field2 field to given value.
+
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/others/go/oneof-anyof-required/docs/Object.md

@@ -0,0 +1,72 @@
+# Object
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Field1** | **string** | Specifies an action name to be used with the Android Intent class. | 
+**Field2** | **string** | Specifies an action name to be used with the Android Intent class. | 
+
+## Methods
+
+### NewObject
+
+`func NewObject(field1 string, field2 string, ) *Object`
+
+NewObject instantiates a new Object object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewObjectWithDefaults
+
+`func NewObjectWithDefaults() *Object`
+
+NewObjectWithDefaults instantiates a new Object object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetField1
+
+`func (o *Object) GetField1() string`
+
+GetField1 returns the Field1 field if non-nil, zero value otherwise.
+
+### GetField1Ok
+
+`func (o *Object) GetField1Ok() (*string, bool)`
+
+GetField1Ok returns a tuple with the Field1 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField1
+
+`func (o *Object) SetField1(v string)`
+
+SetField1 sets Field1 field to given value.
+
+
+### GetField2
+
+`func (o *Object) GetField2() string`
+
+GetField2 returns the Field2 field if non-nil, zero value otherwise.
+
+### GetField2Ok
+
+`func (o *Object) GetField2Ok() (*string, bool)`
+
+GetField2Ok returns a tuple with the Field2 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField2
+
+`func (o *Object) SetField2(v string)`
+
+SetField2 sets Field2 field to given value.
+
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/others/go/oneof-anyof-required/docs/Object2.md

@@ -0,0 +1,72 @@
+# Object2
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Field1** | **string** | Specifies an action name to be used with the Android Intent class. | 
+**Field2** | **string** | Specifies an action name to be used with the Android Intent class. | 
+
+## Methods
+
+### NewObject2
+
+`func NewObject2(field1 string, field2 string, ) *Object2`
+
+NewObject2 instantiates a new Object2 object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewObject2WithDefaults
+
+`func NewObject2WithDefaults() *Object2`
+
+NewObject2WithDefaults instantiates a new Object2 object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetField1
+
+`func (o *Object2) GetField1() string`
+
+GetField1 returns the Field1 field if non-nil, zero value otherwise.
+
+### GetField1Ok
+
+`func (o *Object2) GetField1Ok() (*string, bool)`
+
+GetField1Ok returns a tuple with the Field1 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField1
+
+`func (o *Object2) SetField1(v string)`
+
+SetField1 sets Field1 field to given value.
+
+
+### GetField2
+
+`func (o *Object2) GetField2() string`
+
+GetField2 returns the Field2 field if non-nil, zero value otherwise.
+
+### GetField2Ok
+
+`func (o *Object2) GetField2Ok() (*string, bool)`
+
+GetField2Ok returns a tuple with the Field2 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField2
+
+`func (o *Object2) SetField2(v string)`
+
+SetField2 sets Field2 field to given value.
+
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/others/go/oneof-anyof-required/git_push.sh

@@ -0,0 +1,57 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 openapi-petstore-perl "minor update" "gitlab.com"
+
+git_user_id=$1
+git_repo_id=$2
+release_note=$3
+git_host=$4
+
+if [ "$git_host" = "" ]; then
+    git_host="github.com"
+    echo "[INFO] No command line input provided. Set \$git_host to $git_host"
+fi
+
+if [ "$git_user_id" = "" ]; then
+    git_user_id="GIT_USER_ID"
+    echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
+fi
+
+if [ "$git_repo_id" = "" ]; then
+    git_repo_id="GIT_REPO_ID"
+    echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
+fi
+
+if [ "$release_note" = "" ]; then
+    release_note="Minor update"
+    echo "[INFO] No command line input provided. Set \$release_note to $release_note"
+fi
+
+# Initialize the local directory as a Git repository
+git init
+
+# Adds the files in the local repository and stages them for commit.
+git add .
+
+# Commits the tracked changes and prepares them to be pushed to a remote repository.
+git commit -m "$release_note"
+
+# Sets the new remote
+git_remote=$(git remote)
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
+        git remote add origin https://${git_host}/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:"${GIT_TOKEN}"@${git_host}/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+git pull origin master
+
+# Pushes (Forces) the changes in the local repository up to the remote repository
+echo "Git pushing to https://${git_host}/${git_user_id}/${git_repo_id}.git"
+git push origin master 2>&1 | grep -v 'To https'

samples/client/others/go/oneof-anyof-required/go.mod

@@ -0,0 +1,6 @@
+module github.com/GIT_USER_ID/GIT_REPO_ID
+
+go 1.18
+
+require (
+)

samples/client/others/go/oneof-anyof-required/go.sum

@@ -0,0 +1,11 @@
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e h1:bRhVy7zSSasaqNksaRZiA5EEI+Ei4I1nO5Jh72wfHlg=
+golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=

samples/client/others/go/oneof-anyof-required/model_nested_object1.go

@@ -0,0 +1,159 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"bytes"
+	"fmt"
+)
+
+// checks if the NestedObject1 type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &NestedObject1{}
+
+// NestedObject1 struct for NestedObject1
+type NestedObject1 struct {
+	// Specifies an action name to be used with the Android Intent class.
+	Field1 string `json:"field1"`
+}
+
+type _NestedObject1 NestedObject1
+
+// NewNestedObject1 instantiates a new NestedObject1 object
+// This constructor will assign default values to properties that have it defined,
+// and makes sure properties required by API are set, but the set of arguments
+// will change when the set of required properties is changed
+func NewNestedObject1(field1 string) *NestedObject1 {
+	this := NestedObject1{}
+	this.Field1 = field1
+	return &this
+}
+
+// NewNestedObject1WithDefaults instantiates a new NestedObject1 object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewNestedObject1WithDefaults() *NestedObject1 {
+	this := NestedObject1{}
+	return &this
+}
+
+// GetField1 returns the Field1 field value
+func (o *NestedObject1) GetField1() string {
+	if o == nil {
+		var ret string
+		return ret
+	}
+
+	return o.Field1
+}
+
+// GetField1Ok returns a tuple with the Field1 field value
+// and a boolean to check if the value has been set.
+func (o *NestedObject1) GetField1Ok() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return &o.Field1, true
+}
+
+// SetField1 sets field value
+func (o *NestedObject1) SetField1(v string) {
+	o.Field1 = v
+}
+
+func (o NestedObject1) MarshalJSON() ([]byte, error) {
+	toSerialize,err := o.ToMap()
+	if err != nil {
+		return []byte{}, err
+	}
+	return json.Marshal(toSerialize)
+}
+
+func (o NestedObject1) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["field1"] = o.Field1
+	return toSerialize, nil
+}
+
+func (o *NestedObject1) UnmarshalJSON(data []byte) (err error) {
+	// This validates that all required properties are included in the JSON object
+	// by unmarshalling the object into a generic map with string keys and checking
+	// that every required field exists as a key in the generic map.
+	requiredProperties := []string{
+		"field1",
+	}
+
+	allProperties := make(map[string]interface{})
+
+	err = json.Unmarshal(data, &allProperties)
+
+	if err != nil {
+		return err;
+	}
+
+	for _, requiredProperty := range(requiredProperties) {
+		if _, exists := allProperties[requiredProperty]; !exists {
+			return fmt.Errorf("no value given for required property %v", requiredProperty)
+		}
+	}
+
+	varNestedObject1 := _NestedObject1{}
+
+	decoder := json.NewDecoder(bytes.NewReader(data))
+	decoder.DisallowUnknownFields()
+	err = decoder.Decode(&varNestedObject1)
+
+	if err != nil {
+		return err
+	}
+
+	*o = NestedObject1(varNestedObject1)
+
+	return err
+}
+
+type NullableNestedObject1 struct {
+	value *NestedObject1
+	isSet bool
+}
+
+func (v NullableNestedObject1) Get() *NestedObject1 {
+	return v.value
+}
+
+func (v *NullableNestedObject1) Set(val *NestedObject1) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableNestedObject1) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableNestedObject1) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableNestedObject1(val *NestedObject1) *NullableNestedObject1 {
+	return &NullableNestedObject1{value: val, isSet: true}
+}
+
+func (v NullableNestedObject1) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableNestedObject1) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/client/others/go/oneof-anyof-required/model_nested_object2.go

@@ -0,0 +1,159 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"bytes"
+	"fmt"
+)
+
+// checks if the NestedObject2 type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &NestedObject2{}
+
+// NestedObject2 struct for NestedObject2
+type NestedObject2 struct {
+	// Specifies an action name to be used with the Android Intent class.
+	Field2 string `json:"field2"`
+}
+
+type _NestedObject2 NestedObject2
+
+// NewNestedObject2 instantiates a new NestedObject2 object
+// This constructor will assign default values to properties that have it defined,
+// and makes sure properties required by API are set, but the set of arguments
+// will change when the set of required properties is changed
+func NewNestedObject2(field2 string) *NestedObject2 {
+	this := NestedObject2{}
+	this.Field2 = field2
+	return &this
+}
+
+// NewNestedObject2WithDefaults instantiates a new NestedObject2 object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewNestedObject2WithDefaults() *NestedObject2 {
+	this := NestedObject2{}
+	return &this
+}
+
+// GetField2 returns the Field2 field value
+func (o *NestedObject2) GetField2() string {
+	if o == nil {
+		var ret string
+		return ret
+	}
+
+	return o.Field2
+}
+
+// GetField2Ok returns a tuple with the Field2 field value
+// and a boolean to check if the value has been set.
+func (o *NestedObject2) GetField2Ok() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return &o.Field2, true
+}
+
+// SetField2 sets field value
+func (o *NestedObject2) SetField2(v string) {
+	o.Field2 = v
+}
+
+func (o NestedObject2) MarshalJSON() ([]byte, error) {
+	toSerialize,err := o.ToMap()
+	if err != nil {
+		return []byte{}, err
+	}
+	return json.Marshal(toSerialize)
+}
+
+func (o NestedObject2) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["field2"] = o.Field2
+	return toSerialize, nil
+}
+
+func (o *NestedObject2) UnmarshalJSON(data []byte) (err error) {
+	// This validates that all required properties are included in the JSON object
+	// by unmarshalling the object into a generic map with string keys and checking
+	// that every required field exists as a key in the generic map.
+	requiredProperties := []string{
+		"field2",
+	}
+
+	allProperties := make(map[string]interface{})
+
+	err = json.Unmarshal(data, &allProperties)
+
+	if err != nil {
+		return err;
+	}
+
+	for _, requiredProperty := range(requiredProperties) {
+		if _, exists := allProperties[requiredProperty]; !exists {
+			return fmt.Errorf("no value given for required property %v", requiredProperty)
+		}
+	}
+
+	varNestedObject2 := _NestedObject2{}
+
+	decoder := json.NewDecoder(bytes.NewReader(data))
+	decoder.DisallowUnknownFields()
+	err = decoder.Decode(&varNestedObject2)
+
+	if err != nil {
+		return err
+	}
+
+	*o = NestedObject2(varNestedObject2)
+
+	return err
+}
+
+type NullableNestedObject2 struct {
+	value *NestedObject2
+	isSet bool
+}
+
+func (v NullableNestedObject2) Get() *NestedObject2 {
+	return v.value
+}
+
+func (v *NullableNestedObject2) Set(val *NestedObject2) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableNestedObject2) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableNestedObject2) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableNestedObject2(val *NestedObject2) *NullableNestedObject2 {
+	return &NullableNestedObject2{value: val, isSet: true}
+}
+
+func (v NullableNestedObject2) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableNestedObject2) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/client/others/go/oneof-anyof-required/model_object.go

@@ -0,0 +1,148 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+// Object - struct for Object
+type Object struct {
+	NestedObject1 *NestedObject1
+	NestedObject2 *NestedObject2
+}
+
+// NestedObject1AsObject is a convenience function that returns NestedObject1 wrapped in Object
+func NestedObject1AsObject(v *NestedObject1) Object {
+	return Object{
+		NestedObject1: v,
+	}
+}
+
+// NestedObject2AsObject is a convenience function that returns NestedObject2 wrapped in Object
+func NestedObject2AsObject(v *NestedObject2) Object {
+	return Object{
+		NestedObject2: v,
+	}
+}
+
+
+// Unmarshal JSON data into one of the pointers in the struct
+func (dst *Object) UnmarshalJSON(data []byte) error {
+	var err error
+	match := 0
+	// try to unmarshal data into NestedObject1
+	err = newStrictDecoder(data).Decode(&dst.NestedObject1)
+	if err == nil {
+		jsonNestedObject1, _ := json.Marshal(dst.NestedObject1)
+		if string(jsonNestedObject1) == "{}" { // empty struct
+			dst.NestedObject1 = nil
+		} else {
+			match++
+		}
+	} else {
+		dst.NestedObject1 = nil
+	}
+
+	// try to unmarshal data into NestedObject2
+	err = newStrictDecoder(data).Decode(&dst.NestedObject2)
+	if err == nil {
+		jsonNestedObject2, _ := json.Marshal(dst.NestedObject2)
+		if string(jsonNestedObject2) == "{}" { // empty struct
+			dst.NestedObject2 = nil
+		} else {
+			match++
+		}
+	} else {
+		dst.NestedObject2 = nil
+	}
+
+	if match > 1 { // more than 1 match
+		// reset to nil
+		dst.NestedObject1 = nil
+		dst.NestedObject2 = nil
+
+		return fmt.Errorf("data matches more than one schema in oneOf(Object)")
+	} else if match == 1 {
+		return nil // exactly one match
+	} else { // no match
+		return fmt.Errorf("data failed to match schemas in oneOf(Object)")
+	}
+}
+
+// Marshal data from the first non-nil pointers in the struct to JSON
+func (src Object) MarshalJSON() ([]byte, error) {
+	if src.NestedObject1 != nil {
+		return json.Marshal(&src.NestedObject1)
+	}
+
+	if src.NestedObject2 != nil {
+		return json.Marshal(&src.NestedObject2)
+	}
+
+	return nil, nil // no data in oneOf schemas
+}
+
+// Get the actual instance
+func (obj *Object) GetActualInstance() (interface{}) {
+	if obj == nil {
+		return nil
+	}
+	if obj.NestedObject1 != nil {
+		return obj.NestedObject1
+	}
+
+	if obj.NestedObject2 != nil {
+		return obj.NestedObject2
+	}
+
+	// all schemas are nil
+	return nil
+}
+
+type NullableObject struct {
+	value *Object
+	isSet bool
+}
+
+func (v NullableObject) Get() *Object {
+	return v.value
+}
+
+func (v *NullableObject) Set(val *Object) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableObject) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableObject) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableObject(val *Object) *NullableObject {
+	return &NullableObject{value: val, isSet: true}
+}
+
+func (v NullableObject) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableObject) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/client/others/go/oneof-anyof-required/model_object2.go

@@ -0,0 +1,105 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"fmt"
+)
+
+// Object2 struct for Object2
+type Object2 struct {
+	NestedObject1 *NestedObject1
+	NestedObject2 *NestedObject2
+}
+
+// Unmarshal JSON data into any of the pointers in the struct
+func (dst *Object2) UnmarshalJSON(data []byte) error {
+	var err error
+	// try to unmarshal JSON data into NestedObject1
+	err = json.Unmarshal(data, &dst.NestedObject1);
+	if err == nil {
+		jsonNestedObject1, _ := json.Marshal(dst.NestedObject1)
+		if string(jsonNestedObject1) == "{}" { // empty struct
+			dst.NestedObject1 = nil
+		} else {
+			return nil // data stored in dst.NestedObject1, return on the first match
+		}
+	} else {
+		dst.NestedObject1 = nil
+	}
+
+	// try to unmarshal JSON data into NestedObject2
+	err = json.Unmarshal(data, &dst.NestedObject2);
+	if err == nil {
+		jsonNestedObject2, _ := json.Marshal(dst.NestedObject2)
+		if string(jsonNestedObject2) == "{}" { // empty struct
+			dst.NestedObject2 = nil
+		} else {
+			return nil // data stored in dst.NestedObject2, return on the first match
+		}
+	} else {
+		dst.NestedObject2 = nil
+	}
+
+	return fmt.Errorf("data failed to match schemas in anyOf(Object2)")
+}
+
+// Marshal data from the first non-nil pointers in the struct to JSON
+func (src *Object2) MarshalJSON() ([]byte, error) {
+	if src.NestedObject1 != nil {
+		return json.Marshal(&src.NestedObject1)
+	}
+
+	if src.NestedObject2 != nil {
+		return json.Marshal(&src.NestedObject2)
+	}
+
+	return nil, nil // no data in anyOf schemas
+}
+
+type NullableObject2 struct {
+	value *Object2
+	isSet bool
+}
+
+func (v NullableObject2) Get() *Object2 {
+	return v.value
+}
+
+func (v *NullableObject2) Set(val *Object2) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableObject2) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableObject2) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableObject2(val *Object2) *NullableObject2 {
+	return &NullableObject2{value: val, isSet: true}
+}
+
+func (v NullableObject2) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableObject2) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/client/others/go/oneof-anyof-required/response.go

@@ -0,0 +1,47 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"net/http"
+)
+
+// APIResponse stores the API response returned by the server.
+type APIResponse struct {
+	*http.Response `json:"-"`
+	Message        string `json:"message,omitempty"`
+	// Operation is the name of the OpenAPI operation.
+	Operation string `json:"operation,omitempty"`
+	// RequestURL is the request URL. This value is always available, even if the
+	// embedded *http.Response is nil.
+	RequestURL string `json:"url,omitempty"`
+	// Method is the HTTP method used for the request.  This value is always
+	// available, even if the embedded *http.Response is nil.
+	Method string `json:"method,omitempty"`
+	// Payload holds the contents of the response body (which may be nil or empty).
+	// This is provided here as the raw response.Body() reader will have already
+	// been drained.
+	Payload []byte `json:"-"`
+}
+
+// NewAPIResponse returns a new APIResponse object.
+func NewAPIResponse(r *http.Response) *APIResponse {
+
+	response := &APIResponse{Response: r}
+	return response
+}
+
+// NewAPIResponseWithError returns a new APIResponse object with the provided error message.
+func NewAPIResponseWithError(errorMessage string) *APIResponse {
+
+	response := &APIResponse{Message: errorMessage}
+	return response
+}

samples/client/others/go/oneof-anyof-required/utils.go

@@ -0,0 +1,347 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"reflect"
+	"time"
+)
+
+// PtrBool is a helper routine that returns a pointer to given boolean value.
+func PtrBool(v bool) *bool { return &v }
+
+// PtrInt is a helper routine that returns a pointer to given integer value.
+func PtrInt(v int) *int { return &v }
+
+// PtrInt32 is a helper routine that returns a pointer to given integer value.
+func PtrInt32(v int32) *int32 { return &v }
+
+// PtrInt64 is a helper routine that returns a pointer to given integer value.
+func PtrInt64(v int64) *int64 { return &v }
+
+// PtrFloat32 is a helper routine that returns a pointer to given float value.
+func PtrFloat32(v float32) *float32 { return &v }
+
+// PtrFloat64 is a helper routine that returns a pointer to given float value.
+func PtrFloat64(v float64) *float64 { return &v }
+
+// PtrString is a helper routine that returns a pointer to given string value.
+func PtrString(v string) *string { return &v }
+
+// PtrTime is helper routine that returns a pointer to given Time value.
+func PtrTime(v time.Time) *time.Time { return &v }
+
+type NullableBool struct {
+	value *bool
+	isSet bool
+}
+
+func (v NullableBool) Get() *bool {
+	return v.value
+}
+
+func (v *NullableBool) Set(val *bool) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableBool) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableBool) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableBool(val *bool) *NullableBool {
+	return &NullableBool{value: val, isSet: true}
+}
+
+func (v NullableBool) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableBool) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableInt struct {
+	value *int
+	isSet bool
+}
+
+func (v NullableInt) Get() *int {
+	return v.value
+}
+
+func (v *NullableInt) Set(val *int) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableInt) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableInt) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableInt(val *int) *NullableInt {
+	return &NullableInt{value: val, isSet: true}
+}
+
+func (v NullableInt) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableInt) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableInt32 struct {
+	value *int32
+	isSet bool
+}
+
+func (v NullableInt32) Get() *int32 {
+	return v.value
+}
+
+func (v *NullableInt32) Set(val *int32) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableInt32) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableInt32) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableInt32(val *int32) *NullableInt32 {
+	return &NullableInt32{value: val, isSet: true}
+}
+
+func (v NullableInt32) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableInt32) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableInt64 struct {
+	value *int64
+	isSet bool
+}
+
+func (v NullableInt64) Get() *int64 {
+	return v.value
+}
+
+func (v *NullableInt64) Set(val *int64) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableInt64) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableInt64) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableInt64(val *int64) *NullableInt64 {
+	return &NullableInt64{value: val, isSet: true}
+}
+
+func (v NullableInt64) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableInt64) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableFloat32 struct {
+	value *float32
+	isSet bool
+}
+
+func (v NullableFloat32) Get() *float32 {
+	return v.value
+}
+
+func (v *NullableFloat32) Set(val *float32) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableFloat32) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableFloat32) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableFloat32(val *float32) *NullableFloat32 {
+	return &NullableFloat32{value: val, isSet: true}
+}
+
+func (v NullableFloat32) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableFloat32) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableFloat64 struct {
+	value *float64
+	isSet bool
+}
+
+func (v NullableFloat64) Get() *float64 {
+	return v.value
+}
+
+func (v *NullableFloat64) Set(val *float64) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableFloat64) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableFloat64) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableFloat64(val *float64) *NullableFloat64 {
+	return &NullableFloat64{value: val, isSet: true}
+}
+
+func (v NullableFloat64) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableFloat64) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableString struct {
+	value *string
+	isSet bool
+}
+
+func (v NullableString) Get() *string {
+	return v.value
+}
+
+func (v *NullableString) Set(val *string) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableString) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableString) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableString(val *string) *NullableString {
+	return &NullableString{value: val, isSet: true}
+}
+
+func (v NullableString) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableString) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableTime struct {
+	value *time.Time
+	isSet bool
+}
+
+func (v NullableTime) Get() *time.Time {
+	return v.value
+}
+
+func (v *NullableTime) Set(val *time.Time) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableTime) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableTime) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableTime(val *time.Time) *NullableTime {
+	return &NullableTime{value: val, isSet: true}
+}
+
+func (v NullableTime) MarshalJSON() ([]byte, error) {
+	return v.value.MarshalJSON()
+}
+
+func (v *NullableTime) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+// IsNil checks if an input is nil
+func IsNil(i interface{}) bool {
+	if i == nil {
+		return true
+	}
+	switch reflect.TypeOf(i).Kind() {
+	case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.UnsafePointer, reflect.Interface, reflect.Slice:
+		return reflect.ValueOf(i).IsNil()
+	case reflect.Array:
+		return reflect.ValueOf(i).IsZero()
+	}
+	return false
+}
+
+type MappedNullable interface {
+	ToMap() (map[string]interface{}, error)
+}

samples/client/others/go/oneof-required/.gitignore

@@ -0,0 +1,24 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test
+*.prof

samples/client/others/go/oneof-required/.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/others/go/oneof-required/.openapi-generator/FILES

@@ -0,0 +1,21 @@
+.gitignore
+.travis.yml
+README.md
+api/openapi.yaml
+client.go
+configuration.go
+docs/NestedObject1.md
+docs/NestedObject2.md
+docs/Object.md
+docs/Object2.md
+docs/Object3.md
+git_push.sh
+go.mod
+go.sum
+model_nested_object1.go
+model_nested_object2.go
+model_object.go
+model_object2.go
+model_object3.go
+response.go
+utils.go

samples/client/others/go/oneof-required/.openapi-generator/VERSION

@@ -0,0 +1 @@
+7.3.0-SNAPSHOT

samples/client/others/go/oneof-required/.travis.yml

@@ -0,0 +1,8 @@
+language: go
+
+install:
+  - go get -d -v .
+
+script:
+  - go build -v ./
+

samples/client/others/go/oneof-required/README.md

@@ -0,0 +1,114 @@
+# Go API client for openapi
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+## Overview
+This API client was generated by the [OpenAPI Generator](https://openapi-generator.tech) project.  By using the [OpenAPI-spec](https://www.openapis.org/) from a remote server, you can easily generate an API client.
+
+- API version: 1.0.0
+- Package version: 1.0.0
+- Build package: org.openapitools.codegen.languages.GoClientCodegen
+
+## Installation
+
+Install the following dependencies:
+
+```sh
+go get github.com/stretchr/testify/assert
+go get golang.org/x/net/context
+```
+
+Put the package under your project folder and add the following in import:
+
+```go
+import openapi "github.com/GIT_USER_ID/GIT_REPO_ID"
+```
+
+To use a proxy, set the environment variable `HTTP_PROXY`:
+
+```go
+os.Setenv("HTTP_PROXY", "http://proxy_name:proxy_port")
+```
+
+## Configuration of Server URL
+
+Default configuration comes with `Servers` field that contains server objects as defined in the OpenAPI specification.
+
+### Select Server Configuration
+
+For using other server than the one defined on index 0 set context value `openapi.ContextServerIndex` of type `int`.
+
+```go
+ctx := context.WithValue(context.Background(), openapi.ContextServerIndex, 1)
+```
+
+### Templated Server URL
+
+Templated server URL is formatted using default variables from configuration or from context value `openapi.ContextServerVariables` of type `map[string]string`.
+
+```go
+ctx := context.WithValue(context.Background(), openapi.ContextServerVariables, map[string]string{
+	"basePath": "v2",
+})
+```
+
+Note, enum values are always validated and all unused variables are silently ignored.
+
+### URLs Configuration per Operation
+
+Each operation can use different server URL defined using `OperationServers` map in the `Configuration`.
+An operation is uniquely identified by `"{classname}Service.{nickname}"` string.
+Similar rules for overriding default operation server index and variables applies by using `openapi.ContextOperationServerIndices` and `openapi.ContextOperationServerVariables` context maps.
+
+```go
+ctx := context.WithValue(context.Background(), openapi.ContextOperationServerIndices, map[string]int{
+	"{classname}Service.{nickname}": 2,
+})
+ctx = context.WithValue(context.Background(), openapi.ContextOperationServerVariables, map[string]map[string]string{
+	"{classname}Service.{nickname}": {
+		"port": "8443",
+	},
+})
+```
+
+## Documentation for API Endpoints
+
+All URIs are relative to *http://localhost*
+
+Class | Method | HTTP request | Description
+------------ | ------------- | ------------- | -------------
+
+
+## Documentation For Models
+
+ - [NestedObject1](docs/NestedObject1.md)
+ - [NestedObject2](docs/NestedObject2.md)
+ - [Object](docs/Object.md)
+ - [Object2](docs/Object2.md)
+ - [Object3](docs/Object3.md)
+
+
+## Documentation For Authorization
+
+Endpoints do not require authorization.
+
+
+## Documentation for Utility Methods
+
+Due to the fact that model structure members are all pointers, this package contains
+a number of utility functions to easily obtain pointers to values of basic types.
+Each of these functions takes a value of the given basic type and returns a pointer to it:
+
+* `PtrBool`
+* `PtrInt`
+* `PtrInt32`
+* `PtrInt64`
+* `PtrFloat`
+* `PtrFloat32`
+* `PtrFloat64`
+* `PtrString`
+* `PtrTime`
+
+## Author
+
+

samples/client/others/go/oneof-required/api/openapi.yaml

@@ -0,0 +1,37 @@
+openapi: 3.0.0
+info:
+  title: Test
+  version: 1.0.0
+servers:
+- url: /
+paths: {}
+components:
+  schemas:
+    NestedObject1:
+      properties:
+        field1:
+          description: Specifies an action name to be used with the Android Intent
+            class.
+          type: string
+      required:
+      - field1
+    NestedObject2:
+      properties:
+        field2:
+          description: Specifies an action name to be used with the Android Intent
+            class.
+          type: string
+      required:
+      - field2
+    Object:
+      oneOf:
+      - $ref: '#/components/schemas/NestedObject1'
+      - $ref: '#/components/schemas/NestedObject2'
+    Object2:
+      anyOf:
+      - $ref: '#/components/schemas/NestedObject1'
+      - $ref: '#/components/schemas/NestedObject2'
+    Object3:
+      allOf:
+      - $ref: '#/components/schemas/NestedObject1'
+      - $ref: '#/components/schemas/NestedObject2'

samples/client/others/go/oneof-required/client.go

@@ -0,0 +1,657 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"io"
+	"log"
+	"mime/multipart"
+	"net/http"
+	"net/http/httputil"
+	"net/url"
+	"os"
+	"path/filepath"
+	"reflect"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+)
+
+var (
+	JsonCheck       = regexp.MustCompile(`(?i:(?:application|text)/(?:[^;]+\+)?json)`)
+	XmlCheck        = regexp.MustCompile(`(?i:(?:application|text)/(?:[^;]+\+)?xml)`)
+	queryParamSplit = regexp.MustCompile(`(^|&)([^&]+)`)
+	queryDescape    = strings.NewReplacer( "%5B", "[", "%5D", "]" )
+)
+
+// APIClient manages communication with the Test API v1.0.0
+// In most cases there should be only one, shared, APIClient.
+type APIClient struct {
+	cfg    *Configuration
+	common service // Reuse a single struct instead of allocating one for each service on the heap.
+
+	// API Services
+}
+
+type service struct {
+	client *APIClient
+}
+
+// NewAPIClient creates a new API client. Requires a userAgent string describing your application.
+// optionally a custom http.Client to allow for advanced features such as caching.
+func NewAPIClient(cfg *Configuration) *APIClient {
+	if cfg.HTTPClient == nil {
+		cfg.HTTPClient = http.DefaultClient
+	}
+
+	c := &APIClient{}
+	c.cfg = cfg
+	c.common.client = c
+
+	// API Services
+
+	return c
+}
+
+func atoi(in string) (int, error) {
+	return strconv.Atoi(in)
+}
+
+// selectHeaderContentType select a content type from the available list.
+func selectHeaderContentType(contentTypes []string) string {
+	if len(contentTypes) == 0 {
+		return ""
+	}
+	if contains(contentTypes, "application/json") {
+		return "application/json"
+	}
+	return contentTypes[0] // use the first content type specified in 'consumes'
+}
+
+// selectHeaderAccept join all accept types and return
+func selectHeaderAccept(accepts []string) string {
+	if len(accepts) == 0 {
+		return ""
+	}
+
+	if contains(accepts, "application/json") {
+		return "application/json"
+	}
+
+	return strings.Join(accepts, ",")
+}
+
+// contains is a case insensitive match, finding needle in a haystack
+func contains(haystack []string, needle string) bool {
+	for _, a := range haystack {
+		if strings.EqualFold(a, needle) {
+			return true
+		}
+	}
+	return false
+}
+
+// Verify optional parameters are of the correct type.
+func typeCheckParameter(obj interface{}, expected string, name string) error {
+	// Make sure there is an object.
+	if obj == nil {
+		return nil
+	}
+
+	// Check the type is as expected.
+	if reflect.TypeOf(obj).String() != expected {
+		return fmt.Errorf("expected %s to be of type %s but received %s", name, expected, reflect.TypeOf(obj).String())
+	}
+	return nil
+}
+
+func parameterValueToString( obj interface{}, key string ) string {
+	if reflect.TypeOf(obj).Kind() != reflect.Ptr {
+		return fmt.Sprintf("%v", obj)
+	}
+	var param,ok = obj.(MappedNullable)
+	if !ok {
+		return ""
+	}
+	dataMap,err := param.ToMap()
+	if err != nil {
+		return ""
+	}
+	return fmt.Sprintf("%v", dataMap[key])
+}
+
+// parameterAddToHeaderOrQuery adds the provided object to the request header or url query
+// supporting deep object syntax
+func parameterAddToHeaderOrQuery(headerOrQueryParams interface{}, keyPrefix string, obj interface{}, collectionType string) {
+	var v = reflect.ValueOf(obj)
+	var value = ""
+	if v == reflect.ValueOf(nil) {
+		value = "null"
+	} else {
+		switch v.Kind() {
+			case reflect.Invalid:
+				value = "invalid"
+
+			case reflect.Struct:
+				if t,ok := obj.(MappedNullable); ok {
+					dataMap,err := t.ToMap()
+					if err != nil {
+						return
+					}
+					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, dataMap, collectionType)
+					return
+				}
+				if t, ok := obj.(time.Time); ok {
+					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, t.Format(time.RFC3339), collectionType)
+					return
+				}
+				value = v.Type().String() + " value"
+			case reflect.Slice:
+				var indValue = reflect.ValueOf(obj)
+				if indValue == reflect.ValueOf(nil) {
+					return
+				}
+				var lenIndValue = indValue.Len()
+				for i:=0;i<lenIndValue;i++ {
+					var arrayValue = indValue.Index(i)
+					parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, arrayValue.Interface(), collectionType)
+				}
+				return
+
+			case reflect.Map:
+				var indValue = reflect.ValueOf(obj)
+				if indValue == reflect.ValueOf(nil) {
+					return
+				}
+				iter := indValue.MapRange()
+				for iter.Next() {
+					k,v := iter.Key(), iter.Value()
+					parameterAddToHeaderOrQuery(headerOrQueryParams, fmt.Sprintf("%s[%s]", keyPrefix, k.String()), v.Interface(), collectionType)
+				}
+				return
+
+			case reflect.Interface:
+				fallthrough
+			case reflect.Ptr:
+				parameterAddToHeaderOrQuery(headerOrQueryParams, keyPrefix, v.Elem().Interface(), collectionType)
+				return
+
+			case reflect.Int, reflect.Int8, reflect.Int16,
+				reflect.Int32, reflect.Int64:
+				value = strconv.FormatInt(v.Int(), 10)
+			case reflect.Uint, reflect.Uint8, reflect.Uint16,
+				reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+				value = strconv.FormatUint(v.Uint(), 10)
+			case reflect.Float32, reflect.Float64:
+				value = strconv.FormatFloat(v.Float(), 'g', -1, 32)
+			case reflect.Bool:
+				value = strconv.FormatBool(v.Bool())
+			case reflect.String:
+				value = v.String()
+			default:
+				value = v.Type().String() + " value"
+		}
+	}
+
+	switch valuesMap := headerOrQueryParams.(type) {
+		case url.Values:
+			if collectionType == "csv" && valuesMap.Get(keyPrefix) != "" {
+				valuesMap.Set(keyPrefix, valuesMap.Get(keyPrefix) + "," + value)
+			} else {
+				valuesMap.Add(keyPrefix, value)
+			}
+			break
+		case map[string]string:
+			valuesMap[keyPrefix] = value
+			break
+	}
+}
+
+// helper for converting interface{} parameters to json strings
+func parameterToJson(obj interface{}) (string, error) {
+	jsonBuf, err := json.Marshal(obj)
+	if err != nil {
+		return "", err
+	}
+	return string(jsonBuf), err
+}
+
+// callAPI do the request.
+func (c *APIClient) callAPI(request *http.Request) (*http.Response, error) {
+	if c.cfg.Debug {
+		dump, err := httputil.DumpRequestOut(request, true)
+		if err != nil {
+			return nil, err
+		}
+		log.Printf("\n%s\n", string(dump))
+	}
+
+	resp, err := c.cfg.HTTPClient.Do(request)
+	if err != nil {
+		return resp, err
+	}
+
+	if c.cfg.Debug {
+		dump, err := httputil.DumpResponse(resp, true)
+		if err != nil {
+			return resp, err
+		}
+		log.Printf("\n%s\n", string(dump))
+	}
+	return resp, err
+}
+
+// Allow modification of underlying config for alternate implementations and testing
+// Caution: modifying the configuration while live can cause data races and potentially unwanted behavior
+func (c *APIClient) GetConfig() *Configuration {
+	return c.cfg
+}
+
+type formFile struct {
+		fileBytes []byte
+		fileName string
+		formFileName string
+}
+
+// prepareRequest build the request
+func (c *APIClient) prepareRequest(
+	ctx context.Context,
+	path string, method string,
+	postBody interface{},
+	headerParams map[string]string,
+	queryParams url.Values,
+	formParams url.Values,
+	formFiles []formFile) (localVarRequest *http.Request, err error) {
+
+	var body *bytes.Buffer
+
+	// Detect postBody type and post.
+	if postBody != nil {
+		contentType := headerParams["Content-Type"]
+		if contentType == "" {
+			contentType = detectContentType(postBody)
+			headerParams["Content-Type"] = contentType
+		}
+
+		body, err = setBody(postBody, contentType)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	// add form parameters and file if available.
+	if strings.HasPrefix(headerParams["Content-Type"], "multipart/form-data") && len(formParams) > 0 || (len(formFiles) > 0) {
+		if body != nil {
+			return nil, errors.New("Cannot specify postBody and multipart form at the same time.")
+		}
+		body = &bytes.Buffer{}
+		w := multipart.NewWriter(body)
+
+		for k, v := range formParams {
+			for _, iv := range v {
+				if strings.HasPrefix(k, "@") { // file
+					err = addFile(w, k[1:], iv)
+					if err != nil {
+						return nil, err
+					}
+				} else { // form value
+					w.WriteField(k, iv)
+				}
+			}
+		}
+		for _, formFile := range formFiles {
+			if len(formFile.fileBytes) > 0 && formFile.fileName != "" {
+				w.Boundary()
+				part, err := w.CreateFormFile(formFile.formFileName, filepath.Base(formFile.fileName))
+				if err != nil {
+						return nil, err
+				}
+				_, err = part.Write(formFile.fileBytes)
+				if err != nil {
+						return nil, err
+				}
+			}
+		}
+
+		// Set the Boundary in the Content-Type
+		headerParams["Content-Type"] = w.FormDataContentType()
+
+		// Set Content-Length
+		headerParams["Content-Length"] = fmt.Sprintf("%d", body.Len())
+		w.Close()
+	}
+
+	if strings.HasPrefix(headerParams["Content-Type"], "application/x-www-form-urlencoded") && len(formParams) > 0 {
+		if body != nil {
+			return nil, errors.New("Cannot specify postBody and x-www-form-urlencoded form at the same time.")
+		}
+		body = &bytes.Buffer{}
+		body.WriteString(formParams.Encode())
+		// Set Content-Length
+		headerParams["Content-Length"] = fmt.Sprintf("%d", body.Len())
+	}
+
+	// Setup path and query parameters
+	url, err := url.Parse(path)
+	if err != nil {
+		return nil, err
+	}
+
+	// Override request host, if applicable
+	if c.cfg.Host != "" {
+		url.Host = c.cfg.Host
+	}
+
+	// Override request scheme, if applicable
+	if c.cfg.Scheme != "" {
+		url.Scheme = c.cfg.Scheme
+	}
+
+	// Adding Query Param
+	query := url.Query()
+	for k, v := range queryParams {
+		for _, iv := range v {
+			query.Add(k, iv)
+		}
+	}
+
+	// Encode the parameters.
+	url.RawQuery = queryParamSplit.ReplaceAllStringFunc(query.Encode(), func(s string) string {
+		pieces := strings.Split(s, "=")
+		pieces[0] = queryDescape.Replace(pieces[0])
+		return strings.Join(pieces, "=")
+	})
+
+	// Generate a new request
+	if body != nil {
+		localVarRequest, err = http.NewRequest(method, url.String(), body)
+	} else {
+		localVarRequest, err = http.NewRequest(method, url.String(), nil)
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	// add header parameters, if any
+	if len(headerParams) > 0 {
+		headers := http.Header{}
+		for h, v := range headerParams {
+			headers[h] = []string{v}
+		}
+		localVarRequest.Header = headers
+	}
+
+	// Add the user agent to the request.
+	localVarRequest.Header.Add("User-Agent", c.cfg.UserAgent)
+
+	if ctx != nil {
+		// add context to the request
+		localVarRequest = localVarRequest.WithContext(ctx)
+
+		// Walk through any authentication.
+
+	}
+
+	for header, value := range c.cfg.DefaultHeader {
+		localVarRequest.Header.Add(header, value)
+	}
+	return localVarRequest, nil
+}
+
+func (c *APIClient) decode(v interface{}, b []byte, contentType string) (err error) {
+	if len(b) == 0 {
+		return nil
+	}
+	if s, ok := v.(*string); ok {
+		*s = string(b)
+		return nil
+	}
+	if f, ok := v.(*os.File); ok {
+		f, err = os.CreateTemp("", "HttpClientFile")
+		if err != nil {
+			return
+		}
+		_, err = f.Write(b)
+		if err != nil {
+			return
+		}
+		_, err = f.Seek(0, io.SeekStart)
+		return
+	}
+	if f, ok := v.(**os.File); ok {
+		*f, err = os.CreateTemp("", "HttpClientFile")
+		if err != nil {
+			return
+		}
+		_, err = (*f).Write(b)
+		if err != nil {
+			return
+		}
+		_, err = (*f).Seek(0, io.SeekStart)
+		return
+	}
+	if XmlCheck.MatchString(contentType) {
+		if err = xml.Unmarshal(b, v); err != nil {
+			return err
+		}
+		return nil
+	}
+	if JsonCheck.MatchString(contentType) {
+		if actualObj, ok := v.(interface{ GetActualInstance() interface{} }); ok { // oneOf, anyOf schemas
+			if unmarshalObj, ok := actualObj.(interface{ UnmarshalJSON([]byte) error }); ok { // make sure it has UnmarshalJSON defined
+				if err = unmarshalObj.UnmarshalJSON(b); err != nil {
+					return err
+				}
+			} else {
+				return errors.New("Unknown type with GetActualInstance but no unmarshalObj.UnmarshalJSON defined")
+			}
+		} else if err = json.Unmarshal(b, v); err != nil { // simple model
+			return err
+		}
+		return nil
+	}
+	return errors.New("undefined response type")
+}
+
+// Add a file to the multipart request
+func addFile(w *multipart.Writer, fieldName, path string) error {
+	file, err := os.Open(filepath.Clean(path))
+	if err != nil {
+		return err
+	}
+	err = file.Close()
+	if err != nil {
+		return err
+	}
+
+	part, err := w.CreateFormFile(fieldName, filepath.Base(path))
+	if err != nil {
+		return err
+	}
+	_, err = io.Copy(part, file)
+
+	return err
+}
+
+// Prevent trying to import "fmt"
+func reportError(format string, a ...interface{}) error {
+	return fmt.Errorf(format, a...)
+}
+
+// A wrapper for strict JSON decoding
+func newStrictDecoder(data []byte) *json.Decoder {
+	dec := json.NewDecoder(bytes.NewBuffer(data))
+	dec.DisallowUnknownFields()
+	return dec
+}
+
+// Set request body from an interface{}
+func setBody(body interface{}, contentType string) (bodyBuf *bytes.Buffer, err error) {
+	if bodyBuf == nil {
+		bodyBuf = &bytes.Buffer{}
+	}
+
+	if reader, ok := body.(io.Reader); ok {
+		_, err = bodyBuf.ReadFrom(reader)
+	} else if fp, ok := body.(*os.File); ok {
+		_, err = bodyBuf.ReadFrom(fp)
+	} else if b, ok := body.([]byte); ok {
+		_, err = bodyBuf.Write(b)
+	} else if s, ok := body.(string); ok {
+		_, err = bodyBuf.WriteString(s)
+	} else if s, ok := body.(*string); ok {
+		_, err = bodyBuf.WriteString(*s)
+	} else if JsonCheck.MatchString(contentType) {
+		err = json.NewEncoder(bodyBuf).Encode(body)
+	} else if XmlCheck.MatchString(contentType) {
+		var bs []byte
+		bs, err = xml.Marshal(body)
+		if err == nil {
+			bodyBuf.Write(bs)
+		}
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	if bodyBuf.Len() == 0 {
+		err = fmt.Errorf("invalid body type %s\n", contentType)
+		return nil, err
+	}
+	return bodyBuf, nil
+}
+
+// detectContentType method is used to figure out `Request.Body` content type for request header
+func detectContentType(body interface{}) string {
+	contentType := "text/plain; charset=utf-8"
+	kind := reflect.TypeOf(body).Kind()
+
+	switch kind {
+	case reflect.Struct, reflect.Map, reflect.Ptr:
+		contentType = "application/json; charset=utf-8"
+	case reflect.String:
+		contentType = "text/plain; charset=utf-8"
+	default:
+		if b, ok := body.([]byte); ok {
+			contentType = http.DetectContentType(b)
+		} else if kind == reflect.Slice {
+			contentType = "application/json; charset=utf-8"
+		}
+	}
+
+	return contentType
+}
+
+// Ripped from https://github.com/gregjones/httpcache/blob/master/httpcache.go
+type cacheControl map[string]string
+
+func parseCacheControl(headers http.Header) cacheControl {
+	cc := cacheControl{}
+	ccHeader := headers.Get("Cache-Control")
+	for _, part := range strings.Split(ccHeader, ",") {
+		part = strings.Trim(part, " ")
+		if part == "" {
+			continue
+		}
+		if strings.ContainsRune(part, '=') {
+			keyval := strings.Split(part, "=")
+			cc[strings.Trim(keyval[0], " ")] = strings.Trim(keyval[1], ",")
+		} else {
+			cc[part] = ""
+		}
+	}
+	return cc
+}
+
+// CacheExpires helper function to determine remaining time before repeating a request.
+func CacheExpires(r *http.Response) time.Time {
+	// Figure out when the cache expires.
+	var expires time.Time
+	now, err := time.Parse(time.RFC1123, r.Header.Get("date"))
+	if err != nil {
+		return time.Now()
+	}
+	respCacheControl := parseCacheControl(r.Header)
+
+	if maxAge, ok := respCacheControl["max-age"]; ok {
+		lifetime, err := time.ParseDuration(maxAge + "s")
+		if err != nil {
+			expires = now
+		} else {
+			expires = now.Add(lifetime)
+		}
+	} else {
+		expiresHeader := r.Header.Get("Expires")
+		if expiresHeader != "" {
+			expires, err = time.Parse(time.RFC1123, expiresHeader)
+			if err != nil {
+				expires = now
+			}
+		}
+	}
+	return expires
+}
+
+func strlen(s string) int {
+	return utf8.RuneCountInString(s)
+}
+
+// GenericOpenAPIError Provides access to the body, error and model on returned errors.
+type GenericOpenAPIError struct {
+	body  []byte
+	error string
+	model interface{}
+}
+
+// Error returns non-empty string if there was an error.
+func (e GenericOpenAPIError) Error() string {
+	return e.error
+}
+
+// Body returns the raw bytes of the response
+func (e GenericOpenAPIError) Body() []byte {
+	return e.body
+}
+
+// Model returns the unpacked model of the error
+func (e GenericOpenAPIError) Model() interface{} {
+	return e.model
+}
+
+// format error message using title and detail when model implements rfc7807
+func formatErrorMessage(status string, v interface{}) string {
+	str := ""
+	metaValue := reflect.ValueOf(v).Elem()
+
+	if metaValue.Kind() == reflect.Struct {
+		field := metaValue.FieldByName("Title")
+		if field != (reflect.Value{}) {
+			str = fmt.Sprintf("%s", field.Interface())
+		}
+
+		field = metaValue.FieldByName("Detail")
+		if field != (reflect.Value{}) {
+			str = fmt.Sprintf("%s (%s)", str, field.Interface())
+		}
+	}
+
+	return strings.TrimSpace(fmt.Sprintf("%s %s", status, str))
+}

samples/client/others/go/oneof-required/configuration.go

@@ -0,0 +1,215 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+// contextKeys are used to identify the type of value in the context.
+// Since these are string, it is possible to get a short description of the
+// context key for logging and debugging using key.String().
+
+type contextKey string
+
+func (c contextKey) String() string {
+	return "auth " + string(c)
+}
+
+var (
+	// ContextServerIndex uses a server configuration from the index.
+	ContextServerIndex = contextKey("serverIndex")
+
+	// ContextOperationServerIndices uses a server configuration from the index mapping.
+	ContextOperationServerIndices = contextKey("serverOperationIndices")
+
+	// ContextServerVariables overrides a server configuration variables.
+	ContextServerVariables = contextKey("serverVariables")
+
+	// ContextOperationServerVariables overrides a server configuration variables using operation specific values.
+	ContextOperationServerVariables = contextKey("serverOperationVariables")
+)
+
+// BasicAuth provides basic http authentication to a request passed via context using ContextBasicAuth
+type BasicAuth struct {
+	UserName string `json:"userName,omitempty"`
+	Password string `json:"password,omitempty"`
+}
+
+// APIKey provides API key based authentication to a request passed via context using ContextAPIKey
+type APIKey struct {
+	Key    string
+	Prefix string
+}
+
+// ServerVariable stores the information about a server variable
+type ServerVariable struct {
+	Description  string
+	DefaultValue string
+	EnumValues   []string
+}
+
+// ServerConfiguration stores the information about a server
+type ServerConfiguration struct {
+	URL string
+	Description string
+	Variables map[string]ServerVariable
+}
+
+// ServerConfigurations stores multiple ServerConfiguration items
+type ServerConfigurations []ServerConfiguration
+
+// Configuration stores the configuration of the API client
+type Configuration struct {
+	Host             string            `json:"host,omitempty"`
+	Scheme           string            `json:"scheme,omitempty"`
+	DefaultHeader    map[string]string `json:"defaultHeader,omitempty"`
+	UserAgent        string            `json:"userAgent,omitempty"`
+	Debug            bool              `json:"debug,omitempty"`
+	Servers          ServerConfigurations
+	OperationServers map[string]ServerConfigurations
+	HTTPClient       *http.Client
+}
+
+// NewConfiguration returns a new Configuration object
+func NewConfiguration() *Configuration {
+	cfg := &Configuration{
+		DefaultHeader:    make(map[string]string),
+		UserAgent:        "OpenAPI-Generator/1.0.0/go",
+		Debug:            false,
+		Servers:          ServerConfigurations{
+			{
+				URL: "",
+				Description: "No description provided",
+			},
+		},
+		OperationServers: map[string]ServerConfigurations{
+		},
+	}
+	return cfg
+}
+
+// AddDefaultHeader adds a new HTTP header to the default header in the request
+func (c *Configuration) AddDefaultHeader(key string, value string) {
+	c.DefaultHeader[key] = value
+}
+
+// URL formats template on a index using given variables
+func (sc ServerConfigurations) URL(index int, variables map[string]string) (string, error) {
+	if index < 0 || len(sc) <= index {
+		return "", fmt.Errorf("index %v out of range %v", index, len(sc)-1)
+	}
+	server := sc[index]
+	url := server.URL
+
+	// go through variables and replace placeholders
+	for name, variable := range server.Variables {
+		if value, ok := variables[name]; ok {
+			found := bool(len(variable.EnumValues) == 0)
+			for _, enumValue := range variable.EnumValues {
+				if value == enumValue {
+					found = true
+				}
+			}
+			if !found {
+				return "", fmt.Errorf("the variable %s in the server URL has invalid value %v. Must be %v", name, value, variable.EnumValues)
+			}
+			url = strings.Replace(url, "{"+name+"}", value, -1)
+		} else {
+			url = strings.Replace(url, "{"+name+"}", variable.DefaultValue, -1)
+		}
+	}
+	return url, nil
+}
+
+// ServerURL returns URL based on server settings
+func (c *Configuration) ServerURL(index int, variables map[string]string) (string, error) {
+	return c.Servers.URL(index, variables)
+}
+
+func getServerIndex(ctx context.Context) (int, error) {
+	si := ctx.Value(ContextServerIndex)
+	if si != nil {
+		if index, ok := si.(int); ok {
+			return index, nil
+		}
+		return 0, reportError("Invalid type %T should be int", si)
+	}
+	return 0, nil
+}
+
+func getServerOperationIndex(ctx context.Context, endpoint string) (int, error) {
+	osi := ctx.Value(ContextOperationServerIndices)
+	if osi != nil {
+		if operationIndices, ok := osi.(map[string]int); !ok {
+			return 0, reportError("Invalid type %T should be map[string]int", osi)
+		} else {
+			index, ok := operationIndices[endpoint]
+			if ok {
+				return index, nil
+			}
+		}
+	}
+	return getServerIndex(ctx)
+}
+
+func getServerVariables(ctx context.Context) (map[string]string, error) {
+	sv := ctx.Value(ContextServerVariables)
+	if sv != nil {
+		if variables, ok := sv.(map[string]string); ok {
+			return variables, nil
+		}
+		return nil, reportError("ctx value of ContextServerVariables has invalid type %T should be map[string]string", sv)
+	}
+	return nil, nil
+}
+
+func getServerOperationVariables(ctx context.Context, endpoint string) (map[string]string, error) {
+	osv := ctx.Value(ContextOperationServerVariables)
+	if osv != nil {
+		if operationVariables, ok := osv.(map[string]map[string]string); !ok {
+			return nil, reportError("ctx value of ContextOperationServerVariables has invalid type %T should be map[string]map[string]string", osv)
+		} else {
+			variables, ok := operationVariables[endpoint]
+			if ok {
+				return variables, nil
+			}
+		}
+	}
+	return getServerVariables(ctx)
+}
+
+// ServerURLWithContext returns a new server URL given an endpoint
+func (c *Configuration) ServerURLWithContext(ctx context.Context, endpoint string) (string, error) {
+	sc, ok := c.OperationServers[endpoint]
+	if !ok {
+		sc = c.Servers
+	}
+
+	if ctx == nil {
+		return sc.URL(0, nil)
+	}
+
+	index, err := getServerOperationIndex(ctx, endpoint)
+	if err != nil {
+		return "", err
+	}
+
+	variables, err := getServerOperationVariables(ctx, endpoint)
+	if err != nil {
+		return "", err
+	}
+
+	return sc.URL(index, variables)
+}

samples/client/others/go/oneof-required/docs/NestedObject1.md

@@ -0,0 +1,51 @@
+# NestedObject1
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Field1** | **string** | Specifies an action name to be used with the Android Intent class. | 
+
+## Methods
+
+### NewNestedObject1
+
+`func NewNestedObject1(field1 string, ) *NestedObject1`
+
+NewNestedObject1 instantiates a new NestedObject1 object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewNestedObject1WithDefaults
+
+`func NewNestedObject1WithDefaults() *NestedObject1`
+
+NewNestedObject1WithDefaults instantiates a new NestedObject1 object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetField1
+
+`func (o *NestedObject1) GetField1() string`
+
+GetField1 returns the Field1 field if non-nil, zero value otherwise.
+
+### GetField1Ok
+
+`func (o *NestedObject1) GetField1Ok() (*string, bool)`
+
+GetField1Ok returns a tuple with the Field1 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField1
+
+`func (o *NestedObject1) SetField1(v string)`
+
+SetField1 sets Field1 field to given value.
+
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/others/go/oneof-required/docs/NestedObject2.md

@@ -0,0 +1,51 @@
+# NestedObject2
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Field2** | **string** | Specifies an action name to be used with the Android Intent class. | 
+
+## Methods
+
+### NewNestedObject2
+
+`func NewNestedObject2(field2 string, ) *NestedObject2`
+
+NewNestedObject2 instantiates a new NestedObject2 object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewNestedObject2WithDefaults
+
+`func NewNestedObject2WithDefaults() *NestedObject2`
+
+NewNestedObject2WithDefaults instantiates a new NestedObject2 object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetField2
+
+`func (o *NestedObject2) GetField2() string`
+
+GetField2 returns the Field2 field if non-nil, zero value otherwise.
+
+### GetField2Ok
+
+`func (o *NestedObject2) GetField2Ok() (*string, bool)`
+
+GetField2Ok returns a tuple with the Field2 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField2
+
+`func (o *NestedObject2) SetField2(v string)`
+
+SetField2 sets Field2 field to given value.
+
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/others/go/oneof-required/docs/Object.md

@@ -0,0 +1,72 @@
+# Object
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Field1** | **string** | Specifies an action name to be used with the Android Intent class. | 
+**Field2** | **string** | Specifies an action name to be used with the Android Intent class. | 
+
+## Methods
+
+### NewObject
+
+`func NewObject(field1 string, field2 string, ) *Object`
+
+NewObject instantiates a new Object object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewObjectWithDefaults
+
+`func NewObjectWithDefaults() *Object`
+
+NewObjectWithDefaults instantiates a new Object object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetField1
+
+`func (o *Object) GetField1() string`
+
+GetField1 returns the Field1 field if non-nil, zero value otherwise.
+
+### GetField1Ok
+
+`func (o *Object) GetField1Ok() (*string, bool)`
+
+GetField1Ok returns a tuple with the Field1 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField1
+
+`func (o *Object) SetField1(v string)`
+
+SetField1 sets Field1 field to given value.
+
+
+### GetField2
+
+`func (o *Object) GetField2() string`
+
+GetField2 returns the Field2 field if non-nil, zero value otherwise.
+
+### GetField2Ok
+
+`func (o *Object) GetField2Ok() (*string, bool)`
+
+GetField2Ok returns a tuple with the Field2 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField2
+
+`func (o *Object) SetField2(v string)`
+
+SetField2 sets Field2 field to given value.
+
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/others/go/oneof-required/docs/Object2.md

@@ -0,0 +1,72 @@
+# Object2
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Field1** | **string** | Specifies an action name to be used with the Android Intent class. | 
+**Field2** | **string** | Specifies an action name to be used with the Android Intent class. | 
+
+## Methods
+
+### NewObject2
+
+`func NewObject2(field1 string, field2 string, ) *Object2`
+
+NewObject2 instantiates a new Object2 object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewObject2WithDefaults
+
+`func NewObject2WithDefaults() *Object2`
+
+NewObject2WithDefaults instantiates a new Object2 object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetField1
+
+`func (o *Object2) GetField1() string`
+
+GetField1 returns the Field1 field if non-nil, zero value otherwise.
+
+### GetField1Ok
+
+`func (o *Object2) GetField1Ok() (*string, bool)`
+
+GetField1Ok returns a tuple with the Field1 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField1
+
+`func (o *Object2) SetField1(v string)`
+
+SetField1 sets Field1 field to given value.
+
+
+### GetField2
+
+`func (o *Object2) GetField2() string`
+
+GetField2 returns the Field2 field if non-nil, zero value otherwise.
+
+### GetField2Ok
+
+`func (o *Object2) GetField2Ok() (*string, bool)`
+
+GetField2Ok returns a tuple with the Field2 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField2
+
+`func (o *Object2) SetField2(v string)`
+
+SetField2 sets Field2 field to given value.
+
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/others/go/oneof-required/docs/Object3.md

@@ -0,0 +1,72 @@
+# Object3
+
+## Properties
+
+Name | Type | Description | Notes
+------------ | ------------- | ------------- | -------------
+**Field1** | **string** | Specifies an action name to be used with the Android Intent class. | 
+**Field2** | **string** | Specifies an action name to be used with the Android Intent class. | 
+
+## Methods
+
+### NewObject3
+
+`func NewObject3(field1 string, field2 string, ) *Object3`
+
+NewObject3 instantiates a new Object3 object
+This constructor will assign default values to properties that have it defined,
+and makes sure properties required by API are set, but the set of arguments
+will change when the set of required properties is changed
+
+### NewObject3WithDefaults
+
+`func NewObject3WithDefaults() *Object3`
+
+NewObject3WithDefaults instantiates a new Object3 object
+This constructor will only assign default values to properties that have it defined,
+but it doesn't guarantee that properties required by API are set
+
+### GetField1
+
+`func (o *Object3) GetField1() string`
+
+GetField1 returns the Field1 field if non-nil, zero value otherwise.
+
+### GetField1Ok
+
+`func (o *Object3) GetField1Ok() (*string, bool)`
+
+GetField1Ok returns a tuple with the Field1 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField1
+
+`func (o *Object3) SetField1(v string)`
+
+SetField1 sets Field1 field to given value.
+
+
+### GetField2
+
+`func (o *Object3) GetField2() string`
+
+GetField2 returns the Field2 field if non-nil, zero value otherwise.
+
+### GetField2Ok
+
+`func (o *Object3) GetField2Ok() (*string, bool)`
+
+GetField2Ok returns a tuple with the Field2 field if it's non-nil, zero value otherwise
+and a boolean to check if the value has been set.
+
+### SetField2
+
+`func (o *Object3) SetField2(v string)`
+
+SetField2 sets Field2 field to given value.
+
+
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+
+

samples/client/others/go/oneof-required/git_push.sh

@@ -0,0 +1,57 @@
+#!/bin/sh
+# ref: https://help.github.com/articles/adding-an-existing-project-to-github-using-the-command-line/
+#
+# Usage example: /bin/sh ./git_push.sh wing328 openapi-petstore-perl "minor update" "gitlab.com"
+
+git_user_id=$1
+git_repo_id=$2
+release_note=$3
+git_host=$4
+
+if [ "$git_host" = "" ]; then
+    git_host="github.com"
+    echo "[INFO] No command line input provided. Set \$git_host to $git_host"
+fi
+
+if [ "$git_user_id" = "" ]; then
+    git_user_id="GIT_USER_ID"
+    echo "[INFO] No command line input provided. Set \$git_user_id to $git_user_id"
+fi
+
+if [ "$git_repo_id" = "" ]; then
+    git_repo_id="GIT_REPO_ID"
+    echo "[INFO] No command line input provided. Set \$git_repo_id to $git_repo_id"
+fi
+
+if [ "$release_note" = "" ]; then
+    release_note="Minor update"
+    echo "[INFO] No command line input provided. Set \$release_note to $release_note"
+fi
+
+# Initialize the local directory as a Git repository
+git init
+
+# Adds the files in the local repository and stages them for commit.
+git add .
+
+# Commits the tracked changes and prepares them to be pushed to a remote repository.
+git commit -m "$release_note"
+
+# Sets the new remote
+git_remote=$(git remote)
+if [ "$git_remote" = "" ]; then # git remote not defined
+
+    if [ "$GIT_TOKEN" = "" ]; then
+        echo "[INFO] \$GIT_TOKEN (environment variable) is not set. Using the git credential in your environment."
+        git remote add origin https://${git_host}/${git_user_id}/${git_repo_id}.git
+    else
+        git remote add origin https://${git_user_id}:"${GIT_TOKEN}"@${git_host}/${git_user_id}/${git_repo_id}.git
+    fi
+
+fi
+
+git pull origin master
+
+# Pushes (Forces) the changes in the local repository up to the remote repository
+echo "Git pushing to https://${git_host}/${git_user_id}/${git_repo_id}.git"
+git push origin master 2>&1 | grep -v 'To https'

samples/client/others/go/oneof-required/go.mod

@@ -0,0 +1,6 @@
+module github.com/GIT_USER_ID/GIT_REPO_ID
+
+go 1.18
+
+require (
+)

samples/client/others/go/oneof-required/go.sum

@@ -0,0 +1,11 @@
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e h1:bRhVy7zSSasaqNksaRZiA5EEI+Ei4I1nO5Jh72wfHlg=
+golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=
+google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=

samples/client/others/go/oneof-required/model_nested_object1.go

@@ -0,0 +1,159 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"bytes"
+	"fmt"
+)
+
+// checks if the NestedObject1 type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &NestedObject1{}
+
+// NestedObject1 struct for NestedObject1
+type NestedObject1 struct {
+	// Specifies an action name to be used with the Android Intent class.
+	Field1 string `json:"field1"`
+}
+
+type _NestedObject1 NestedObject1
+
+// NewNestedObject1 instantiates a new NestedObject1 object
+// This constructor will assign default values to properties that have it defined,
+// and makes sure properties required by API are set, but the set of arguments
+// will change when the set of required properties is changed
+func NewNestedObject1(field1 string) *NestedObject1 {
+	this := NestedObject1{}
+	this.Field1 = field1
+	return &this
+}
+
+// NewNestedObject1WithDefaults instantiates a new NestedObject1 object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewNestedObject1WithDefaults() *NestedObject1 {
+	this := NestedObject1{}
+	return &this
+}
+
+// GetField1 returns the Field1 field value
+func (o *NestedObject1) GetField1() string {
+	if o == nil {
+		var ret string
+		return ret
+	}
+
+	return o.Field1
+}
+
+// GetField1Ok returns a tuple with the Field1 field value
+// and a boolean to check if the value has been set.
+func (o *NestedObject1) GetField1Ok() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return &o.Field1, true
+}
+
+// SetField1 sets field value
+func (o *NestedObject1) SetField1(v string) {
+	o.Field1 = v
+}
+
+func (o NestedObject1) MarshalJSON() ([]byte, error) {
+	toSerialize,err := o.ToMap()
+	if err != nil {
+		return []byte{}, err
+	}
+	return json.Marshal(toSerialize)
+}
+
+func (o NestedObject1) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["field1"] = o.Field1
+	return toSerialize, nil
+}
+
+func (o *NestedObject1) UnmarshalJSON(data []byte) (err error) {
+	// This validates that all required properties are included in the JSON object
+	// by unmarshalling the object into a generic map with string keys and checking
+	// that every required field exists as a key in the generic map.
+	requiredProperties := []string{
+		"field1",
+	}
+
+	allProperties := make(map[string]interface{})
+
+	err = json.Unmarshal(data, &allProperties)
+
+	if err != nil {
+		return err;
+	}
+
+	for _, requiredProperty := range(requiredProperties) {
+		if _, exists := allProperties[requiredProperty]; !exists {
+			return fmt.Errorf("no value given for required property %v", requiredProperty)
+		}
+	}
+
+	varNestedObject1 := _NestedObject1{}
+
+	decoder := json.NewDecoder(bytes.NewReader(data))
+	decoder.DisallowUnknownFields()
+	err = decoder.Decode(&varNestedObject1)
+
+	if err != nil {
+		return err
+	}
+
+	*o = NestedObject1(varNestedObject1)
+
+	return err
+}
+
+type NullableNestedObject1 struct {
+	value *NestedObject1
+	isSet bool
+}
+
+func (v NullableNestedObject1) Get() *NestedObject1 {
+	return v.value
+}
+
+func (v *NullableNestedObject1) Set(val *NestedObject1) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableNestedObject1) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableNestedObject1) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableNestedObject1(val *NestedObject1) *NullableNestedObject1 {
+	return &NullableNestedObject1{value: val, isSet: true}
+}
+
+func (v NullableNestedObject1) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableNestedObject1) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/client/others/go/oneof-required/model_nested_object2.go

@@ -0,0 +1,159 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"bytes"
+	"fmt"
+)
+
+// checks if the NestedObject2 type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &NestedObject2{}
+
+// NestedObject2 struct for NestedObject2
+type NestedObject2 struct {
+	// Specifies an action name to be used with the Android Intent class.
+	Field2 string `json:"field2"`
+}
+
+type _NestedObject2 NestedObject2
+
+// NewNestedObject2 instantiates a new NestedObject2 object
+// This constructor will assign default values to properties that have it defined,
+// and makes sure properties required by API are set, but the set of arguments
+// will change when the set of required properties is changed
+func NewNestedObject2(field2 string) *NestedObject2 {
+	this := NestedObject2{}
+	this.Field2 = field2
+	return &this
+}
+
+// NewNestedObject2WithDefaults instantiates a new NestedObject2 object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewNestedObject2WithDefaults() *NestedObject2 {
+	this := NestedObject2{}
+	return &this
+}
+
+// GetField2 returns the Field2 field value
+func (o *NestedObject2) GetField2() string {
+	if o == nil {
+		var ret string
+		return ret
+	}
+
+	return o.Field2
+}
+
+// GetField2Ok returns a tuple with the Field2 field value
+// and a boolean to check if the value has been set.
+func (o *NestedObject2) GetField2Ok() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return &o.Field2, true
+}
+
+// SetField2 sets field value
+func (o *NestedObject2) SetField2(v string) {
+	o.Field2 = v
+}
+
+func (o NestedObject2) MarshalJSON() ([]byte, error) {
+	toSerialize,err := o.ToMap()
+	if err != nil {
+		return []byte{}, err
+	}
+	return json.Marshal(toSerialize)
+}
+
+func (o NestedObject2) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["field2"] = o.Field2
+	return toSerialize, nil
+}
+
+func (o *NestedObject2) UnmarshalJSON(data []byte) (err error) {
+	// This validates that all required properties are included in the JSON object
+	// by unmarshalling the object into a generic map with string keys and checking
+	// that every required field exists as a key in the generic map.
+	requiredProperties := []string{
+		"field2",
+	}
+
+	allProperties := make(map[string]interface{})
+
+	err = json.Unmarshal(data, &allProperties)
+
+	if err != nil {
+		return err;
+	}
+
+	for _, requiredProperty := range(requiredProperties) {
+		if _, exists := allProperties[requiredProperty]; !exists {
+			return fmt.Errorf("no value given for required property %v", requiredProperty)
+		}
+	}
+
+	varNestedObject2 := _NestedObject2{}
+
+	decoder := json.NewDecoder(bytes.NewReader(data))
+	decoder.DisallowUnknownFields()
+	err = decoder.Decode(&varNestedObject2)
+
+	if err != nil {
+		return err
+	}
+
+	*o = NestedObject2(varNestedObject2)
+
+	return err
+}
+
+type NullableNestedObject2 struct {
+	value *NestedObject2
+	isSet bool
+}
+
+func (v NullableNestedObject2) Get() *NestedObject2 {
+	return v.value
+}
+
+func (v *NullableNestedObject2) Set(val *NestedObject2) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableNestedObject2) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableNestedObject2) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableNestedObject2(val *NestedObject2) *NullableNestedObject2 {
+	return &NullableNestedObject2{value: val, isSet: true}
+}
+
+func (v NullableNestedObject2) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableNestedObject2) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/client/others/go/oneof-required/model_object.go

@@ -0,0 +1,149 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"fmt"
+	"bytes"
+)
+
+// Object - struct for Object
+type Object struct {
+	NestedObject1 *NestedObject1
+	NestedObject2 *NestedObject2
+}
+
+// NestedObject1AsObject is a convenience function that returns NestedObject1 wrapped in Object
+func NestedObject1AsObject(v *NestedObject1) Object {
+	return Object{
+		NestedObject1: v,
+	}
+}
+
+// NestedObject2AsObject is a convenience function that returns NestedObject2 wrapped in Object
+func NestedObject2AsObject(v *NestedObject2) Object {
+	return Object{
+		NestedObject2: v,
+	}
+}
+
+
+// Unmarshal JSON data into one of the pointers in the struct
+func (dst *Object) UnmarshalJSON(data []byte) error {
+	var err error
+	match := 0
+	// try to unmarshal data into NestedObject1
+	err = newStrictDecoder(data).Decode(&dst.NestedObject1)
+	if err == nil {
+		jsonNestedObject1, _ := json.Marshal(dst.NestedObject1)
+		if string(jsonNestedObject1) == "{}" { // empty struct
+			dst.NestedObject1 = nil
+		} else {
+			match++
+		}
+	} else {
+		dst.NestedObject1 = nil
+	}
+
+	// try to unmarshal data into NestedObject2
+	err = newStrictDecoder(data).Decode(&dst.NestedObject2)
+	if err == nil {
+		jsonNestedObject2, _ := json.Marshal(dst.NestedObject2)
+		if string(jsonNestedObject2) == "{}" { // empty struct
+			dst.NestedObject2 = nil
+		} else {
+			match++
+		}
+	} else {
+		dst.NestedObject2 = nil
+	}
+
+	if match > 1 { // more than 1 match
+		// reset to nil
+		dst.NestedObject1 = nil
+		dst.NestedObject2 = nil
+
+		return fmt.Errorf("data matches more than one schema in oneOf(Object)")
+	} else if match == 1 {
+		return nil // exactly one match
+	} else { // no match
+		return fmt.Errorf("data failed to match schemas in oneOf(Object)")
+	}
+}
+
+// Marshal data from the first non-nil pointers in the struct to JSON
+func (src Object) MarshalJSON() ([]byte, error) {
+	if src.NestedObject1 != nil {
+		return json.Marshal(&src.NestedObject1)
+	}
+
+	if src.NestedObject2 != nil {
+		return json.Marshal(&src.NestedObject2)
+	}
+
+	return nil, nil // no data in oneOf schemas
+}
+
+// Get the actual instance
+func (obj *Object) GetActualInstance() (interface{}) {
+	if obj == nil {
+		return nil
+	}
+	if obj.NestedObject1 != nil {
+		return obj.NestedObject1
+	}
+
+	if obj.NestedObject2 != nil {
+		return obj.NestedObject2
+	}
+
+	// all schemas are nil
+	return nil
+}
+
+type NullableObject struct {
+	value *Object
+	isSet bool
+}
+
+func (v NullableObject) Get() *Object {
+	return v.value
+}
+
+func (v *NullableObject) Set(val *Object) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableObject) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableObject) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableObject(val *Object) *NullableObject {
+	return &NullableObject{value: val, isSet: true}
+}
+
+func (v NullableObject) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableObject) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/client/others/go/oneof-required/model_object2.go

@@ -0,0 +1,106 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"fmt"
+	"bytes"
+)
+
+// Object2 struct for Object2
+type Object2 struct {
+	NestedObject1 *NestedObject1
+	NestedObject2 *NestedObject2
+}
+
+// Unmarshal JSON data into any of the pointers in the struct
+func (dst *Object2) UnmarshalJSON(data []byte) error {
+	var err error
+	// try to unmarshal JSON data into NestedObject1
+	err = json.Unmarshal(data, &dst.NestedObject1);
+	if err == nil {
+		jsonNestedObject1, _ := json.Marshal(dst.NestedObject1)
+		if string(jsonNestedObject1) == "{}" { // empty struct
+			dst.NestedObject1 = nil
+		} else {
+			return nil // data stored in dst.NestedObject1, return on the first match
+		}
+	} else {
+		dst.NestedObject1 = nil
+	}
+
+	// try to unmarshal JSON data into NestedObject2
+	err = json.Unmarshal(data, &dst.NestedObject2);
+	if err == nil {
+		jsonNestedObject2, _ := json.Marshal(dst.NestedObject2)
+		if string(jsonNestedObject2) == "{}" { // empty struct
+			dst.NestedObject2 = nil
+		} else {
+			return nil // data stored in dst.NestedObject2, return on the first match
+		}
+	} else {
+		dst.NestedObject2 = nil
+	}
+
+	return fmt.Errorf("data failed to match schemas in anyOf(Object2)")
+}
+
+// Marshal data from the first non-nil pointers in the struct to JSON
+func (src *Object2) MarshalJSON() ([]byte, error) {
+	if src.NestedObject1 != nil {
+		return json.Marshal(&src.NestedObject1)
+	}
+
+	if src.NestedObject2 != nil {
+		return json.Marshal(&src.NestedObject2)
+	}
+
+	return nil, nil // no data in anyOf schemas
+}
+
+type NullableObject2 struct {
+	value *Object2
+	isSet bool
+}
+
+func (v NullableObject2) Get() *Object2 {
+	return v.value
+}
+
+func (v *NullableObject2) Set(val *Object2) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableObject2) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableObject2) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableObject2(val *Object2) *NullableObject2 {
+	return &NullableObject2{value: val, isSet: true}
+}
+
+func (v NullableObject2) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableObject2) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/client/others/go/oneof-required/model_object3.go

@@ -0,0 +1,188 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"bytes"
+	"fmt"
+)
+
+// checks if the Object3 type satisfies the MappedNullable interface at compile time
+var _ MappedNullable = &Object3{}
+
+// Object3 struct for Object3
+type Object3 struct {
+	// Specifies an action name to be used with the Android Intent class.
+	Field1 string `json:"field1"`
+	// Specifies an action name to be used with the Android Intent class.
+	Field2 string `json:"field2"`
+}
+
+type _Object3 Object3
+
+// NewObject3 instantiates a new Object3 object
+// This constructor will assign default values to properties that have it defined,
+// and makes sure properties required by API are set, but the set of arguments
+// will change when the set of required properties is changed
+func NewObject3(field1 string, field2 string) *Object3 {
+	this := Object3{}
+	this.Field1 = field1
+	this.Field2 = field2
+	return &this
+}
+
+// NewObject3WithDefaults instantiates a new Object3 object
+// This constructor will only assign default values to properties that have it defined,
+// but it doesn't guarantee that properties required by API are set
+func NewObject3WithDefaults() *Object3 {
+	this := Object3{}
+	return &this
+}
+
+// GetField1 returns the Field1 field value
+func (o *Object3) GetField1() string {
+	if o == nil {
+		var ret string
+		return ret
+	}
+
+	return o.Field1
+}
+
+// GetField1Ok returns a tuple with the Field1 field value
+// and a boolean to check if the value has been set.
+func (o *Object3) GetField1Ok() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return &o.Field1, true
+}
+
+// SetField1 sets field value
+func (o *Object3) SetField1(v string) {
+	o.Field1 = v
+}
+
+// GetField2 returns the Field2 field value
+func (o *Object3) GetField2() string {
+	if o == nil {
+		var ret string
+		return ret
+	}
+
+	return o.Field2
+}
+
+// GetField2Ok returns a tuple with the Field2 field value
+// and a boolean to check if the value has been set.
+func (o *Object3) GetField2Ok() (*string, bool) {
+	if o == nil {
+		return nil, false
+	}
+	return &o.Field2, true
+}
+
+// SetField2 sets field value
+func (o *Object3) SetField2(v string) {
+	o.Field2 = v
+}
+
+func (o Object3) MarshalJSON() ([]byte, error) {
+	toSerialize,err := o.ToMap()
+	if err != nil {
+		return []byte{}, err
+	}
+	return json.Marshal(toSerialize)
+}
+
+func (o Object3) ToMap() (map[string]interface{}, error) {
+	toSerialize := map[string]interface{}{}
+	toSerialize["field1"] = o.Field1
+	toSerialize["field2"] = o.Field2
+	return toSerialize, nil
+}
+
+func (o *Object3) UnmarshalJSON(data []byte) (err error) {
+	// This validates that all required properties are included in the JSON object
+	// by unmarshalling the object into a generic map with string keys and checking
+	// that every required field exists as a key in the generic map.
+	requiredProperties := []string{
+		"field1",
+		"field2",
+	}
+
+	allProperties := make(map[string]interface{})
+
+	err = json.Unmarshal(data, &allProperties)
+
+	if err != nil {
+		return err;
+	}
+
+	for _, requiredProperty := range(requiredProperties) {
+		if _, exists := allProperties[requiredProperty]; !exists {
+			return fmt.Errorf("no value given for required property %v", requiredProperty)
+		}
+	}
+
+	varObject3 := _Object3{}
+
+	decoder := json.NewDecoder(bytes.NewReader(data))
+	decoder.DisallowUnknownFields()
+	err = decoder.Decode(&varObject3)
+
+	if err != nil {
+		return err
+	}
+
+	*o = Object3(varObject3)
+
+	return err
+}
+
+type NullableObject3 struct {
+	value *Object3
+	isSet bool
+}
+
+func (v NullableObject3) Get() *Object3 {
+	return v.value
+}
+
+func (v *NullableObject3) Set(val *Object3) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableObject3) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableObject3) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableObject3(val *Object3) *NullableObject3 {
+	return &NullableObject3{value: val, isSet: true}
+}
+
+func (v NullableObject3) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableObject3) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+

samples/client/others/go/oneof-required/response.go

@@ -0,0 +1,47 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"net/http"
+)
+
+// APIResponse stores the API response returned by the server.
+type APIResponse struct {
+	*http.Response `json:"-"`
+	Message        string `json:"message,omitempty"`
+	// Operation is the name of the OpenAPI operation.
+	Operation string `json:"operation,omitempty"`
+	// RequestURL is the request URL. This value is always available, even if the
+	// embedded *http.Response is nil.
+	RequestURL string `json:"url,omitempty"`
+	// Method is the HTTP method used for the request.  This value is always
+	// available, even if the embedded *http.Response is nil.
+	Method string `json:"method,omitempty"`
+	// Payload holds the contents of the response body (which may be nil or empty).
+	// This is provided here as the raw response.Body() reader will have already
+	// been drained.
+	Payload []byte `json:"-"`
+}
+
+// NewAPIResponse returns a new APIResponse object.
+func NewAPIResponse(r *http.Response) *APIResponse {
+
+	response := &APIResponse{Response: r}
+	return response
+}
+
+// NewAPIResponseWithError returns a new APIResponse object with the provided error message.
+func NewAPIResponseWithError(errorMessage string) *APIResponse {
+
+	response := &APIResponse{Message: errorMessage}
+	return response
+}

samples/client/others/go/oneof-required/utils.go

@@ -0,0 +1,347 @@
+/*
+Test
+
+No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+
+API version: 1.0.0
+*/
+
+// Code generated by OpenAPI Generator (https://openapi-generator.tech); DO NOT EDIT.
+
+package openapi
+
+import (
+	"encoding/json"
+	"reflect"
+	"time"
+)
+
+// PtrBool is a helper routine that returns a pointer to given boolean value.
+func PtrBool(v bool) *bool { return &v }
+
+// PtrInt is a helper routine that returns a pointer to given integer value.
+func PtrInt(v int) *int { return &v }
+
+// PtrInt32 is a helper routine that returns a pointer to given integer value.
+func PtrInt32(v int32) *int32 { return &v }
+
+// PtrInt64 is a helper routine that returns a pointer to given integer value.
+func PtrInt64(v int64) *int64 { return &v }
+
+// PtrFloat32 is a helper routine that returns a pointer to given float value.
+func PtrFloat32(v float32) *float32 { return &v }
+
+// PtrFloat64 is a helper routine that returns a pointer to given float value.
+func PtrFloat64(v float64) *float64 { return &v }
+
+// PtrString is a helper routine that returns a pointer to given string value.
+func PtrString(v string) *string { return &v }
+
+// PtrTime is helper routine that returns a pointer to given Time value.
+func PtrTime(v time.Time) *time.Time { return &v }
+
+type NullableBool struct {
+	value *bool
+	isSet bool
+}
+
+func (v NullableBool) Get() *bool {
+	return v.value
+}
+
+func (v *NullableBool) Set(val *bool) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableBool) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableBool) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableBool(val *bool) *NullableBool {
+	return &NullableBool{value: val, isSet: true}
+}
+
+func (v NullableBool) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableBool) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableInt struct {
+	value *int
+	isSet bool
+}
+
+func (v NullableInt) Get() *int {
+	return v.value
+}
+
+func (v *NullableInt) Set(val *int) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableInt) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableInt) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableInt(val *int) *NullableInt {
+	return &NullableInt{value: val, isSet: true}
+}
+
+func (v NullableInt) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableInt) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableInt32 struct {
+	value *int32
+	isSet bool
+}
+
+func (v NullableInt32) Get() *int32 {
+	return v.value
+}
+
+func (v *NullableInt32) Set(val *int32) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableInt32) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableInt32) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableInt32(val *int32) *NullableInt32 {
+	return &NullableInt32{value: val, isSet: true}
+}
+
+func (v NullableInt32) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableInt32) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableInt64 struct {
+	value *int64
+	isSet bool
+}
+
+func (v NullableInt64) Get() *int64 {
+	return v.value
+}
+
+func (v *NullableInt64) Set(val *int64) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableInt64) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableInt64) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableInt64(val *int64) *NullableInt64 {
+	return &NullableInt64{value: val, isSet: true}
+}
+
+func (v NullableInt64) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableInt64) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableFloat32 struct {
+	value *float32
+	isSet bool
+}
+
+func (v NullableFloat32) Get() *float32 {
+	return v.value
+}
+
+func (v *NullableFloat32) Set(val *float32) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableFloat32) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableFloat32) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableFloat32(val *float32) *NullableFloat32 {
+	return &NullableFloat32{value: val, isSet: true}
+}
+
+func (v NullableFloat32) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableFloat32) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableFloat64 struct {
+	value *float64
+	isSet bool
+}
+
+func (v NullableFloat64) Get() *float64 {
+	return v.value
+}
+
+func (v *NullableFloat64) Set(val *float64) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableFloat64) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableFloat64) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableFloat64(val *float64) *NullableFloat64 {
+	return &NullableFloat64{value: val, isSet: true}
+}
+
+func (v NullableFloat64) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableFloat64) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableString struct {
+	value *string
+	isSet bool
+}
+
+func (v NullableString) Get() *string {
+	return v.value
+}
+
+func (v *NullableString) Set(val *string) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableString) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableString) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableString(val *string) *NullableString {
+	return &NullableString{value: val, isSet: true}
+}
+
+func (v NullableString) MarshalJSON() ([]byte, error) {
+	return json.Marshal(v.value)
+}
+
+func (v *NullableString) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+type NullableTime struct {
+	value *time.Time
+	isSet bool
+}
+
+func (v NullableTime) Get() *time.Time {
+	return v.value
+}
+
+func (v *NullableTime) Set(val *time.Time) {
+	v.value = val
+	v.isSet = true
+}
+
+func (v NullableTime) IsSet() bool {
+	return v.isSet
+}
+
+func (v *NullableTime) Unset() {
+	v.value = nil
+	v.isSet = false
+}
+
+func NewNullableTime(val *time.Time) *NullableTime {
+	return &NullableTime{value: val, isSet: true}
+}
+
+func (v NullableTime) MarshalJSON() ([]byte, error) {
+	return v.value.MarshalJSON()
+}
+
+func (v *NullableTime) UnmarshalJSON(src []byte) error {
+	v.isSet = true
+	return json.Unmarshal(src, &v.value)
+}
+
+// IsNil checks if an input is nil
+func IsNil(i interface{}) bool {
+	if i == nil {
+		return true
+	}
+	switch reflect.TypeOf(i).Kind() {
+	case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.UnsafePointer, reflect.Interface, reflect.Slice:
+		return reflect.ValueOf(i).IsNil()
+	case reflect.Array:
+		return reflect.ValueOf(i).IsZero()
+	}
+	return false
+}
+
+type MappedNullable interface {
+	ToMap() (map[string]interface{}, error)
+}