Want to find change set of Known Baseline using RTC Plain Java API

https://rsjazz.wordpress.com/2013/09/30/delivering-change-sets-and-baselines-to-a-stream-using-the-plain-java-client-libraries/ and https://rsjazz.wordpress.com/2013/10/15/extracting-an-archive-into-jazz-scm-using-the-plain-java-client-libraries/ show how the SCM api works. It rebases a component to a baseline. http://thescmlounge.blogspot.com/2013/08/getting-your-stuff-using-rtc-sdk-to-zip.html shows how to get at the data in the baseline.