text: public override String ToString(){CellReference crA = new CellReference(FirstRow, FirstColumn);CellReference crB = new CellReference(LastRow, LastColumn);StringBuilder sb = new StringBuilder();sb.Append(GetType().Name).Append("[");sb.Append(_evaluator.SheetNameRange);sb.Append('!');sb.Append(crA.FormatAsString());sb.Append(':');sb.Append(crB.FormatAsString());sb.Append("]");return sb.ToString();}