public CodeMemberMethod CreateApiFunction(Settings settings, string relativePath, OperationType httpMethod,
                                                  OpenApiOperation apiOperation, ComponentsToCsTypes coms2CsTypes, bool forAsync, bool useEnsureSuccessStatusCodeEx)
        {
            if (!(new OperationType[] { OperationType.Get, OperationType.Post, OperationType.Put, OperationType.Delete, OperationType.Patch }).Any(d => d == httpMethod))
            {
                Trace.TraceWarning("This HTTP method {0} is not yet supported", httpMethod);
                return(null);
            }

            this.settings     = settings;
            this.nameComposer = new NameComposer(settings);
            this.apiOperation = apiOperation;
            statementOfEnsureSuccessStatusCode = useEnsureSuccessStatusCodeEx ? "EnsureSuccessStatusCodeEx" : "EnsureSuccessStatusCode";

            this.actionName   = nameComposer.GetActionName(apiOperation, httpMethod.ToString(), relativePath);
            this.coms2CsTypes = coms2CsTypes;
            this.forAsync     = forAsync;


            this.RelativePath = RemovePrefixSlash(relativePath);
            this.RelativePath = RegexFunctions.RefineUrlWithHyphenInParameters(RelativePath);

            if (actionName.EndsWith("Async"))
            {
                actionName = actionName[0..^ 5];
        public CodeMemberMethod CreateApiFunction(Settings settings, string relativePath, OperationType httpMethod, OpenApiOperation apiOperation, ComponentsToTsTypes com2TsTypes)
        {
            if (!(new OperationType[] { OperationType.Get, OperationType.Post, OperationType.Put, OperationType.Delete, OperationType.Patch }).Any(d => d == httpMethod))
            {
                Trace.TraceWarning("This HTTP method {0} is not yet supported", httpMethod);
                return(null);
            }

            this.nameComposer          = new NameComposer(settings);
            this.apiOperation          = apiOperation;
            this.HttpMethod            = httpMethod;
            this.ActionName            = nameComposer.GetActionName(apiOperation, httpMethod.ToString(), relativePath);
            this.bodyContentRefBuilder = new BodyContentRefBuilder(com2TsTypes, ActionName);
            this.parametersRefBuilder  = new ParametersRefBuilder(com2TsTypes, ActionName);
            this.ParameterDescriptions = parametersRefBuilder.OpenApiParametersToParameterDescriptions(apiOperation.Parameters);
            if (httpMethod == OperationType.Post || httpMethod == OperationType.Put || httpMethod == OperationType.Patch)
            {
                Tuple <CodeTypeReference, string, bool> kc = bodyContentRefBuilder.GetBodyContent(apiOperation, httpMethod.ToString(), relativePath);
                if (kc != null)
                {
                    this.RequestBodyCodeTypeReference = kc.Item1;
                    this.requestBodyComment           = kc.Item2;
                    if (!kc.Item3)
                    {
                        return(null);                        // not to generate for unsupported POST content type.
                    }
                }
            }

            this.RelativePath = RemovePrefixSlash(relativePath);
            this.RelativePath = RegexFunctions.RefineUrlWithHyphenInParameters(RelativePath);

            Tuple <CodeTypeReference, bool> r;

            try
            {
                var returnRefBuilder = new ReturnRefBuilder(com2TsTypes, ActionName);
                r = returnRefBuilder.GetOperationReturnTypeReference(apiOperation);
            }
            catch (CodeGenException ex)
            {
                if (ex.Pending)
                {
                    throw new CodeGenException($"When generating TS scripts, definition {relativePath}=>{httpMethod} triggers error {ex.Message}");
                }

                throw;
            }

            ReturnTypeReference = r.Item1;

            //create method
            Method = CreateMethodName();

            CreateDocComments();

            switch (HttpMethod)
            {
            case OperationType.Get:
            case OperationType.Delete:
            case OperationType.Post:
            case OperationType.Put:
            case OperationType.Patch:
                RenderImplementation();
                break;

            default:
                Trace.TraceWarning("This HTTP method {0} is not yet supported in TS gen", HttpMethod);
                break;
            }

            return(Method);
        }