private static void VisitIfNotNull <TVisitor>(IVisitable <TVisitor> visitable, TVisitor visitor)
{
GenericChildVisitor.VisitIfNotNull(visitable, visitor);
}
private static void VisitCollection <T, TVisitor>(IReadOnlyCollection <T> collection, TVisitor visitor)
where T : IVisitable <TVisitor>
{
GenericChildVisitor.VisitCollection(collection, visitor);
}
