How can I get all stages in the pipeline job

Hello， I have a question for you . I use java-clint-api to execute a job that created by pipeline 。
How can I get all stages in the pipeline job?
otherwise， Can i get status of every stage?

The issue names the Java client API and Jenkins pipeline jobs but provides no file, test, or entry point to inspect. Clarify whether the request is for an existing API usage example or a new capability, including how stages and their statuses should be exposed; completion is not defined.

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