title: BuildConfig file in android - Purpose and Possibilities
body: <p>Android has a flag called DEBUG in BuildConfig.java. Can someone please explain how is this file created? What is the purpose of having an auto-generated file with a single variable in it?</p>
  
  <p>Is it possible to have something besides DEBUG flag inside this class? What if I want a configuration other than development and release configuration? How can I achieve it?</p>