static public IEnumerable <ITreeViewEntry> EnumerateChildNodeTransitive( this ITreeViewEntry treeViewEntry) => treeViewEntry?.EnumerateNodeFromTreeBFirst(node => node.Child);
public static IEnumerable <ITreeViewEntry> EnumerateChildNodeTransitive(this ITreeViewEntry treeViewEntry) { return(treeViewEntry?.EnumerateNodeFromTreeBFirst((ITreeViewEntry node) => node.Child)); }