: Articles like this guide on ProAndroidDev explain the practical difficulty of navigating AOSP services and the necessity of cross-referencing tools.
Easily switch between different Android releases to see how a feature evolved. Key Features of XREF AOSP 1. Instant Cross-Referencing xref aosp
file:policy : Restricts your search to files with "policy" in the path (e.g., PhoneWindowManager.java ). : Articles like this guide on ProAndroidDev explain