public override CellPosition Apply(Table t)
{
if (t is IndexedTable)
{
IndexedTable it = (IndexedTable)t;
var pos = subLink.Apply(it.m_SourceTable);
var index = System.Array.FindIndex(it.indices, x => x == pos.row);
return(new CellPosition(index, pos.col));
}
return(CellPosition.invalid);
}