Android - downloaded repo - how to determine the code version

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http://stackoverflow.com – I am learning Android. Using Eclipse on Windows. I wanted to be able to step into the Android code. So: I downloaded Cygwin, downloaded the repo tool from Google, pulled down the repository as instructed to bring down the latest version: repo init -u https://android.googlesource.com/platform/manifest All worked fine. I went to Project->Properties->Libraries->Android 4.2->android.jar->Source attachment and I attached an external folder from the downloaded repo. No issues. However when I went to step into the Android code, the debugger did not synch to the code (i.e. the highlight bar in de (HowTos)