code: private void refreshLeftTopHeaderViewHolder(ViewHolder holder) {
          int left = calculateRowHeadersLeft();
          if (isRTL())
              left += mSettings.getCellMargin();
  
          int top = mSettings.isHeaderFixed() ? 0 : -mState.getScrollY();
          View view = holder.getItemView();
  
          int leftMargin = isRTL() ? 0 : mSettings.getCellMargin();
          int topMargin = mSettings.getCellMargin();
  
          view.layout(left + leftMargin,
                  top + topMargin,
                  left + mManager.getHeaderRowWidth() + leftMargin,
                  top + mManager.getHeaderColumnHeight() + topMargin);
      }
docs: Refresh current row header view holder.
  
  @param holder current view holder