docs: def end_of_directory(self, succeeded=True, update_listing=False,
                           cache_to_disc=True):
          '''Wrapper for xbmcplugin.endOfDirectory. Records state in
          self._end_of_directory.
  
          Typically it is not necessary to call this method directly, as
          calling :meth:`~xbmcswift2.Plugin.finish` will call this method.
          '''
          self._update_listing = update_listing
          if not self._end_of_directory:
              self._end_of_directory = True
              # Finalize the directory items
              return xbmcplugin.endOfDirectory(self.handle, succeeded,
                                               update_listing, cache_to_disc)
          assert False, 'Already called endOfDirectory.'