docs: def _update_list_store_entry(self, list_store, config_key, config_value):
          """Helper method to update a list store
  
          :param Gtk.ListStore list_store: List store to be updated
          :param str config_key: Config key to search for
          :param config_value: New config value
          :returns: Row of list store that has been updated
          :rtype: int
          """
          for row_num, row in enumerate(list_store):
              if row[self.KEY_STORAGE_ID] == config_key:
                  row[self.VALUE_STORAGE_ID] = str(config_value)
                  row[self.TOGGLE_VALUE_STORAGE_ID] = config_value
                  return row_num