code: def put(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_put_codec, key_data, key=key_data, value=value_data,
                                            thread_id=thread_id())
docs: Stores a key-value tuple in the multimap.
  
          **Warning: This method uses __hash__ and __eq__ methods of binary form of the key, not the actual implementations
          of __hash__ and __eq__ defined in key's class.**
  
          :param key: (object), the key to be stored.
          :param value: (object), the value to be stored.
          :return: (bool), ``true`` if size of the multimap is increased, ``false`` if the multimap already contains the key-value
          tuple.