cpp-restsdk incorrectly handles object properties containing dash/minus ("-") character

[kesheshyan]

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?
  Compilable C++ code
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

OpenAPI declaration file content or url

{
  "openapi": "3.0.0",
  "components": {
    "schemas": {
      "StringMap": {
        "type": "object",
        "properties": {
          "zh-Hans": {
            "type": "string",
            "description": "Text in Chinese (Simplified)."
          },
      }
    }
  }
}

Description

Generator: cpp-restsdk-client
Produces uncompilable code if there is a "-" (or other characters like a space etc.) in a property name of an object.

if(multipart->hasContent(utility::conversions::to_string_t(U("zh-Hant"))))
{
    utility::string_t refVal_zh-Hant;
    ok &= ModelBase::fromHttpContent(multipart->getContent(utility::conversions::to_string_t(U("zh-Hant"))), refVal_zh-Hant );
    setZhHant(refVal_zh-Hant);
}

Suggest a fix

#12288

Resulting cpp code looks like this:

 if(multipart->hasContent(utility::conversions::to_string_t(U("zh-Hant"))))
{
    utility::string_t refVal_setZhHant;
    ok &= ModelBase::fromHttpContent(multipart->getContent(utility::conversions::to_string_t(U("zh-Hant"))), refVal_setZhHant );
    setZhHant(refVal_setZhHant);
}