private static int GetComplexBindingTermPos (string strBinding, Group groupSubLast)
{
int termPos = strBinding.IndexOf(StrExpressionPostfix, StringComparison.InvariantCulture);
if (termPos == -1)
termPos = strBinding.IndexOf(',', groupSubLast.Index + groupSubLast.Length);
if (termPos == -1)
termPos = strBinding.Length;
return termPos;
}