/// <summary>
/// Implements the visitor pattern for parse nodes.
/// Dispatches to the specific visit method for this node type.
/// For example, MethodNode calls the VisitMethod.
/// </summary>
/// <param name="visitor"></param>
public override TResult Accept <TResult>(IParseTreeVisitor <TResult> visitor)
{
#if DEBUG
if (visitor == null)
{
throw new ArgumentNullException();
}
#endif
return(visitor.VisitSymbolLiteral(this));
}