android13/packages/apps/Dialer/java/com/android/dialer/proguard/proguard.flags

# Keep the annotation, classes, methods, and fields marked as UsedByReflection
-keep class com.android.dialer.proguard.UsedByReflection
-keep @com.android.dialer.proguard.UsedByReflection class *
-keepclassmembers class * {
    @com.android.dialer.proguard.UsedByReflection *;
}
-keep class android.support.design.widget.FloatingActionButton$* { *; }