private static MethodDeclarationSyntax CreateMembersForEndpointsPrivateHelper(
KeyValuePair <OperationType, OpenApiOperation> apiOperation,
bool hasRouteParameters)
{
var operationName = apiOperation.Value.GetOperationName();
var interfaceName = "I" + operationName + NameConstants.ContractHandler;
var methodName = $"Invoke{operationName}Async";
var parameterTypeName = operationName + NameConstants.ContractParameters;
var hasParametersOrRequestBody = apiOperation.Value.HasParametersOrRequestBody() || hasRouteParameters;
// Create method # use CreateParameterList & CreateCodeBlockReturnStatement
var methodDeclaration = SyntaxFactory.MethodDeclaration(
SyntaxFactory.GenericName(SyntaxFactory.Identifier(nameof(Task)))
.WithTypeArgumentList(SyntaxTypeArgumentListFactory.CreateWithOneItem(nameof(ActionResult))),
SyntaxFactory.Identifier(methodName))
.AddModifiers(SyntaxTokenFactory.PrivateKeyword())
.AddModifiers(SyntaxTokenFactory.StaticKeyword())
.AddModifiers(SyntaxTokenFactory.AsyncKeyword())
.WithParameterList(CreateParameterList(hasParametersOrRequestBody, parameterTypeName, interfaceName, false))
.WithBody(
SyntaxFactory.Block(
CreateCodeBlockReturnStatementForHelper(hasParametersOrRequestBody)));
return(methodDeclaration);
}