def _send_success_response(self, response, start_response):
headers = [('<STR_LIT:Content-Type>', '<STR_LIT>')]<EOL>return util.send_wsgi_response('<STR_LIT>', headers, response, start_response)<EOL>
Sends an HTTP 200 json success response.

        This calls start_response and returns the response body.

        Args:
          response: A string containing the response body to return.
          start_response: A function with semantics defined in PEP-333.

        Returns:
          A string, the response body.