docs: public final void unregisterView(final View view) {
          mActivity.runOnUiThread(new Runnable() {
              @Override
              public void run() {
                  if (null != mRenderableViewGroup && view.getParent() == mRenderableViewGroup) {
                      mRenderableViewGroup.removeView(view);
                  }
              }
          });
      }