protected override ArgumentSyntax?GetLambda(ArgumentListSyntax argumentList) => argumentList.GetArgument("expression", 0);
protected override ArgumentSyntax?GetUidPart2(ArgumentListSyntax argumentList) => argumentList.GetArgument("uidPart2", 2 + UidPartOffset);
protected override ArgumentSyntax?GetUidPart1(ArgumentListSyntax argumentList) => argumentList.GetArgument("uidPart1", 1);