public virtual void Visit(PreferenceConGdAstNode node)
{
}
/// <summary>
/// Handles the AST node visit.
/// </summary>
/// <param name="astNode">AST node.</param>
public override void Visit(PreferenceConGdAstNode astNode)
{
ConstraintsData.Add(new PreferenceConstraint(astNode.Name, MasterExporter.ToConstraints(astNode.Argument)));
}