private void layoutChunk(RecyclerView.Recycler recycler,RecyclerView.State state,boolean isFillBottom){
  layoutChunk(recycler,state,isFillBottom,false);
}

private void layoutChunk ( RecyclerView . Recycler recycler , RecyclerView . State state , boolean isFillBottom ) { layoutChunk ( recycler , state , isFillBottom , false ) ; }
the layout process for each item .
