docs: private void init() {
      mCallerContext = null;
      mImageRequest = null;
      mLowResImageRequest = null;
      mMultiImageRequests = null;
      mTryCacheOnlyFirst = true;
      mControllerListener = null;
      mControllerViewportVisibilityListener = null;
      mTapToRetryEnabled = false;
      mAutoPlayAnimations = false;
      mOldController = null;
      mContentDescription = null;
    }