code: def is_following(self, login):
          
          json = False
          if login:
              url = self._build_url('user', 'following', login)
              json = self._boolean(self._get(url), 204, 404)
          return json
docs: Check if the authenticated user is following login.
  
          :param str login: (required), login of the user to check if the
              authenticated user is checking
          :returns: bool