cpp-restsdk code generation issue for type: string when used as $ref:

Created by: sujayran

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

The issue is the with cpp-restsdk generation basic_string instead of utility::string_t

openapi-generator version

openapi-generator-cli-5.0.0

OpenAPI declaration file content or url

 XYZData:
      description:
      type: object
      required:
        - events
      properties:
        events:
          type: array
          items:
            $ref: 'TSxyz.yaml#/components/schemas/Event' 
          minItems: 1
        ids:
          type: array
          items:
            type: string
          minItems: 1
        aIds:
          type: array
          items:
            type: string
          minItems: 1


    Event:
       type: string

-->

Generation Details

java -Dlog.level=warn -jar openapi-generator-cli-5.0.0.jar generate -g cpp-restsdk -i xyz.yaml -o

Steps to reproduce

java -Dlog.level=warn -jar openapi-generator-cli-5.0.0.jar generate -g cpp-restsdk -i xyz.yaml -o

Related issues/PRs

This is the code generated in .h /// std::vector<std::shared_ptrutility::string_t>& getEvents(); bool eventsIsSet() const; void unsetEvents();

void setEvents(const std::vector<std::shared_ptr<utility::string_t>>& value);

.cpp

if(m_EventsIsSet)
{
    val[utility::conversions::to_string_t("Events")] = ModelBase::toJson(m_Events);
}

./../ModelBase.h:184:23: error: no member named 'toJson' in 'std::__cxx11::basic_string' The issue is that it interprets the string as basic_string instead of utility::string_t

Suggest a fix

why can't we just use "basic_string" also $ref adds a shared_ptr even for simple datatype