code: def get(self, app_id, **queryparams):
          
          self.app_id = app_id
          return self._mc_client._get(url=self._build_path(app_id), **queryparams)
docs: Get information about a specific authorized application
  
          :param app_id: The unique id for the connected authorized application
          :type app_id: :py:class:`str`
          :param queryparams: The query string parameters
          queryparams['fields'] = []
          queryparams['exclude_fields'] = []