chore: Multiple response in a resource csharp

[sbansla]

Feature

Previous:
A resource can have one type of response only and that is stored in resource file, Example:
/v1/student (create, list)
/v1/student/{id} (update, fetch, delete)
All above 5 operations must have same response and those are stored in StudentResource class.

Changed:
Now each operation will have different response based in apiStandard flag.
Each operation response is stored in Different resource files.
StudentCreateResource, StudentFetchResource etc.

Final design is:
public class StudentResource { ... } // All methods are present here
public class StudentCreateResponse { ... } // Operation specific response

To validate changes, I created PR for Aws resource
twilio/twilio-csharp#813

Checklist

• I acknowledge that all my contributions will be made under the project's license
• Run make test-docker
• Verify affected language according to the code change:
  • Generate twilio-java from our OpenAPI specification using the scripts/build_twilio_library.py using python scripts/build_twilio_library.py path/to/twilio-oai/spec/yaml path/to/twilio-java -l java and inspect the diff
  • Run make test in twilio-java
  • Create a pull request in twilio-java
  • Provide a link below to the pull request, this ensures that the generated code has been verified
• I have made a material change to the repo (functionality, testing, spelling, grammar)
• I have read the Contribution Guidelines and my PR follows them
• I have titled the PR appropriately
• I have updated my branch with the main branch
• I have added tests that prove my fix is effective or that my feature works
• I have added the necessary documentation about the functionality in the appropriate .md file
• I have added inline documentation to the code I modified

If you have questions, please create a GitHub Issue in this repository.

[shrutiburman]

I cant understand how does this work with a set of CodegenProperty ? Is this intentional?

[sbansla]

Flatten design is choosen for response object at first level.

CreateMessageResponse {
ABC prop1;
String prop2;
}

class ABC {
// properties
}

Why flatten ?
Response type must be of type "Resource". And if response only has String type, sdk build will fail because string does not inherit from 'Resource'