if typing.IsAssignable[typing.GetType[p], Property]
In addition to the CRDT methods, we need to implement methods more commonly found on maps: set, get, delete and has.
。关于这个话题，heLLoword翻译官方下载提供了深入分析
В Иране заявили о поражении американского эсминца02:21
nominal vs. structural types