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

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

# Any class or method annotated with NeededForTesting.
# TODO(b/373579455): Evaluate if <init> needs to be kept.
-keep @com.android.providers.contacts.util.NeededForTesting class * {
  void <init>();
}
-keepclassmembers class * {
  @com.android.providers.contacts.util.NeededForTesting *;
}