code: func (it *iterator4List) Current() Row {
  	if (it.chkCursor == 0 && it.rowCursor == 0) || it.chkCursor > it.li.NumChunks() {
  		return it.End()
  	}
  	if it.rowCursor == 0 {
  		curChk := it.li.GetChunk(it.chkCursor - 1)
  		return curChk.GetRow(curChk.NumRows() - 1)
  	}
  	curChk := it.li.GetChunk(it.chkCursor)
  	return curChk.GetRow(it.rowCursor - 1)
  }
docs: // Current implements the Iterator interface.