 extends androidx.preference.PreferenceGroup {     ctor public PreferenceCategory(android.content.Context!, android.util.AttributeSet!, int, int);     ctor public PreferenceCategory(android.content.Context!, android.util.AttributeSet!, int);     ctor public PreferenceCategory(android.content.Context!, android.util.AttributeSet!);     ctor public PreferenceCategory(android.content.Context!);   }    public abstract class 