[JAVA] 3.0.65 java stub generates method with no return value for get endpoints if $ref is used

[leberknecht]

Description

With 3.0.65 the methods that are generated for get endpoints (havent checked others) are not returning anything. Same specs worked with 3.0.64.

The generated code looks like this:

    public void whateverGet() throws ApiException {
        whateverGetWithHttpInfo();
    }

while with 3.0.64:

    public InlineResponse200 whateverGet() throws ApiException {
        ApiResponse<InlineResponse200> resp = whateverGetWithHttpInfo();
        return resp.getData();
    }

If i put the schema directly, without using the $ref, the generated code is having the return statement.

Swagger-codegen version

3.0.65

Swagger declaration file content or url

openapi: 3.0.1
paths:
  /whatever:
    get:
      responses:
        "200":
          $ref: "#/components/responses/WhateverGetResponse"

components: 
  responses: 
    WhateverGetResponse:
      description: test
      content:
        application/json:
          schema:
            type: object
            properties:
              name:
                type: string

Command line used for generation

java -jar ~/Downloads/swagger-codegen-cli-3.0.65.jar generate -i test.yaml -l java -o ./debug -DhideGenerationTimestamp=true

Steps to reproduce

just generate with 3.0.65

Related issues/PRs

Suggest a fix/enhancement