补充参考资料

[whuanle]

https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/concepts/async/task-asynchronous-programming-model https://www.jteer.dev/posts/csharpasyncstatemachine/#:~:text=The%20async%2Fawait%20keywords%20in%20C%23%20are%20very%20much,but%20is%20instead%20implemented%20with%20a%20state%20machine.

[whuanle]

https://devblogs.microsoft.com/premier-developer/dissecting-the-async-methods-in-c/