public virtual void VisitCheckedExpression(CheckedExpression checkedExpression)
{
StartNode(checkedExpression);
WriteKeyword(CheckedExpression.CheckedKeywordRole);
LPar();
Space(policy.SpacesWithinCheckedExpressionParantheses);
checkedExpression.Expression.AcceptVisitor(this);
Space(policy.SpacesWithinCheckedExpressionParantheses);
RPar();
EndNode(checkedExpression);
}