code: def _create_deserializer(self) -> JsonObjectDeserializer:
          
          if self._deserializer_cache is None:
              deserializer_cls = type(
                  "%sInternalDeserializer" % type(self),
                  (JsonObjectDeserializer,),
                  {
                      "_JSON_ENCODER_ARGS": self._args,
                      "_JSON_ENCODER_KWARGS": self._kwargs
                  }
              )
              self._deserializer_cache = deserializer_cls(self._get_property_mappings(), self._get_deserializable_cls())
          return self._deserializer_cache
docs: Creates a deserializer that is to be used by this decoder.
          :return: the deserializer