@@ -0,0 +1,1164 @@
+/*%0A * Copyright (C) 2018 Yaroslav Mytkalyk%0A *%0A * Licensed under the Apache License, Version 2.0 (the %22License%22);%0A * you may not use this file except in compliance with the License.%0A * You may obtain a copy of the License at%0A *%0A *      http://www.apache.org/licenses/LICENSE-2.0%0A *%0A * Unless required by applicable law or agreed to in writing, software%0A * distributed under the License is distributed on an %22AS IS%22 BASIS,%0A * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.%0A * See the License for the specific language governing permissions and%0A * limitations under the License.%0A */%0Apackage com.doctoror.fuckoffmusicplayer.presentation.mvvm;%0A%0Aimport android.databinding.Observable;%0Aimport android.support.annotation.NonNull;%0A%0Apublic abstract class OnPropertyChangedCallback%3CT extends Observable%3E%0A        extends Observable.OnPropertyChangedCallback %7B%0A%0A    @Override%0A    public final void onPropertyChanged(@NonNull final Observable sender, final int propertyId) %7B%0A        //noinspection unchecked%0A        onPropertyChanged2((T) sender, propertyId);%0A    %7D%0A%0A    protected abstract void onPropertyChanged2(@NonNull T sender, int propertyId);%0A%7D%0A

Add typed OnPropertyChangedCallback.