来个文档支持：任务运行的流程图（便于理解任务每一步关键的执行类）

[itWMdeveloping]

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• [X] I had searched in the issues and found no similar feature requirement.

Description

希望整理一张类似这样的流程图，可以标注关键的任务执行类， 以便于理解源码关键的每一步。

Use case

No response

Related issues

No response

Are you willing to submit a PR?

• [ ] Yes I am willing to submit a PR!

Code of Conduct

• [X] I agree to follow this project's Code of Conduct