code: def _mem_update_done(self, mem):
          
          if mem.id in self._ow_mems_left_to_update:
              self._ow_mems_left_to_update.remove(mem.id)
  
          logger.debug(mem)
  
          if len(self._ow_mems_left_to_update) == 0:
              if self._refresh_callback:
                  self._refresh_callback()
                  self._refresh_callback = None
docs: Callback from each individual memory (only 1-wire) when reading of
          header/elements are done