@Override
            public void onAnimationStart(View view) {
                if (listener == null || !listener.onAnimationStart(view)) {
                    view.setDrawingCacheEnabled(true);
                }
            }
@return true to override parent. Else execute Parent method
android/third_party/search/src/main/java/com/miguelcatalan/materialsearchview/utils/AnimationUtil.java