[csharp] localVarHttpHeaderAccepts list not being generated correctly

Created by: alexl0gan

Description

localVarHttpHeaderAccepts list not being generated correctly. List is missing brackets and contains titles of example responses.

openapi-generator version

3.0.2

OpenAPI declaration file content or url

'/v3/example':
    post:
      summary: example
      parameters:
        - in: body
          name: identity
          schema:
            $ref: '#/definitions/Id'
          required: true
      description: description
      tags:
        - Public API
      responses:
        201:
          description: created
          schema:
            $ref: '#/definitions/Identity'
          examples:
            'Success':
              object: 'example'
        400:
          description: Bad request. The enrollment identity is not valid.
          schema:
            $ref: '#/definitions/ErrorResponse'
        401:
          description: The provided access token is not valid.
          schema:
            $ref: '#/definitions/ErrorResponse'
          examples:
            'Authentication Error':
              object: 'error'
        409:
          description: |
            Conflict.
            $ref: '#/definitions/ErrorResponse'
          examples:
            'Conflict':
              object: 'error'
            'Already claimed':
              object: 'error'

This produces

// to determine the Accept header
String[] localVarHttpHeaderAccepts = new String[] {
    "application/json",
    "Success"
    "Authentication Error",
    "Already claimed",
    "Conflict",
};

This occurred after migrating from swagger codegen 2.2.3.