tools/mainDexClasses.rules

  -keep public class * extends android.app.Instrumentation {
  }
  -keep public class * extends android.app.Application {
  }
  -keep public class * extends android.app.Activity {
  }
  -keep public class * extends android.app.Service {
  }
  -keep public class * extends android.content.ContentProvider {
  }
  -keep public class * extends android.content.BroadcastReceiver {
  }
  -keep public class * extends android.app.backup.BackupAgent {
  }
  -keep class android.support.multidex.** {
    *;
  }