void VisitIdentifierExpressionBackreference(IdentifierExpressionBackreference identifierExpressionBackreference)
{
WriteKeyword("identifierBackreference");
LPar();
WriteIdentifier(identifierExpressionBackreference.ReferencedGroupName);
RPar();
}
void VisitIdentifierExpressionBackreference(IdentifierExpressionBackreference identifierExpressionBackreference)
{
WriteKeyword("identifierBackreference");
var braceHelper = BraceHelper.LeftParen(this, CodeBracesRangeFlags.Parentheses);
WriteIdentifier(identifierExpressionBackreference.ReferencedGroupName, BoxedTextColor.Text);
braceHelper.RightParen();
}