code: def contains_entry(self, key, value):
          
          check_not_none(key, "key can't be None")
          check_not_none(value, "value can't be None")
          key_data = self._to_data(key)
          value_data = self._to_data(value)
          return self._encode_invoke_on_key(multi_map_contains_entry_codec, key_data, key=key_data,
                                            value=value_data, thread_id=thread_id())
docs: Returns whether the multimap contains an entry with the value.
  
          :param key: (object), the specified key.
          :param value: (object), the specified value.
          :return: (bool), ``true`` if this multimap contains the key-value tuple.