code: def render(self, data, accepted_media_type=None, renderer_context=None):
          
          if 'SWAGGER_JSON_PATH' in os.environ:
              with io.open(os.environ['SWAGGER_JSON_PATH'], 'rb') as f:
                  return f.read()
          else:
              return super(ConditionalOpenAPIRenderer, self).render(data, accepted_media_type, renderer_context)
docs: Render the appropriate Open API JSON file.