Fix manually specified response schema names for same request, in OpenAPI 3
Thanks to @WonSik36 reporting #173 and fixing it with #174 !
OpenAPI 3 generator
Before, when manually specifying the schemata for responses with different content types, for the same request (same path, method and response status code), only the first schema name would have been referenced for all responses. This is now fixed to use the correct schema reference/name for the respective response.
Auto-generated schemata and schema names were unaffected.