code: def add(self, item):
          
          check_not_none(item, "Value can't be None")
          element_data = self._to_data(item)
          return self._encode_invoke(list_add_codec, value=element_data)
docs: Adds the specified item to the end of this list.
  
          :param item: (object), the specified item to be appended to this list.
          :return: (bool), ``true`` if item is added, ``false`` otherwise.