code: def full_restapi_key_transformer(key, attr_desc, value):
      
      keys = _FLATTEN.split(attr_desc['key'])
      return ([_decode_attribute_map_key(k) for k in keys], value)
docs: A key transformer that returns the full RestAPI key path.
  
      :param str _: The attribute name
      :param dict attr_desc: The attribute metadata
      :param object value: The value
      :returns: A list of keys using RestAPI syntax.