code: def default_output_format(content_type='application/json', apply_globally=False, api=None, cli=False, http=True):
      
      def decorator(formatter):
          formatter = hug.output_format.content_type(content_type)(formatter)
          if apply_globally:
              if http:
                  hug.defaults.output_format = formatter
              if cli:
                  hug.defaults.cli_output_format = formatter
          else:
              apply_to_api = hug.API(api) if api else hug.api.from_object(formatter)
              if http:
                  apply_to_api.http.output_format = formatter
              if cli:
                  apply_to_api.cli.output_format = formatter
          return formatter
      return decorator
docs: A decorator that allows you to override the default output format for an API