code: @Nullable
      public static Scene getCurrentScene(@NonNull View view) {
          return (Scene) view.getTag(R.id.current_scene);
      }
docs: Gets the current {@link android.transition.Scene} set on the given view. A scene is set on a view
  only if that view is the scene root.
  
  @return The current Scene set on this view. A value of null indicates that
  no Scene is currently set.