question: void removeViewAt ( int index ) { final int offset = getOffset ( index ) ; final View view = mCallback . getChildAt ( offset ) ; if ( view == null ) { return ; } mCallback . removeViewAt ( offset ) ; if ( mBucket . remove ( offset ) ) { mHiddenViews . remove ( view ) ; } if ( DEBUG ) { Log . d ( TAG , "removeViewAt " + index + ", off:" + offset + ", " + this ) ; } }
target:  Removes the view at the provided index from RecyclerView.