example about BuildConsoleStreamListener

I want to get a chunk of jenkins console logs，more than full logs.In the apis, I find BuildConsoleStreamListener can provide implemention。But I didn't know how to complete with BuildConsoleStreamListener, so please provide a sample to me. Many thanks!

Start by locating the BuildConsoleStreamListener entry point and reviewing how the Java client exposes Jenkins console logs. Add a focused usage sample showing how to obtain a log chunk rather than the full log, and verify that the example demonstrates the requested streaming behavior.

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