-keep class com.android.providers.contacts.ContactsDatabaseHelper {
  <init>(...);
}

-keep class com.android.vcard.VCardComposer {
  boolean init();
  int getCount();
}

# Any methods whose name is '*ForTest' are preserved.
-keep class ** {
  *** *ForTest(...);
}

# Any class or method annotated with NeededForTesting.
-keep @com.android.providers.contacts.util.NeededForTesting class *
-keepclassmembers class * {
@com.android.providers.contacts.util.NeededForTesting *;
}