public static IEnumerable <HierarchyListNode <T> > GetLeafNodes <T>([NotNull] this HierarchyList <T> tree)
{
return(tree.Where(a => a.IsLeafNode()));
}
public static IEnumerable <HierarchyListNode <T> > GetBranchNodes <T>([NotNull] this HierarchyList <T> tree)
{
return(tree.Where(a => TreeNodeExtensions.IsBranchNode <T>(a)));
}