public static IEnumerable <IBinaryTreeNode> TraverseSubtree(this IBinaryTreeNode partialroot, TraverseOrder order = TraverseOrder.InOrder)
{
Contract.Requires <ArgumentNullException>(partialroot != null);
Contract.Ensures(Contract.Result <IEnumerable <IBinaryTreeNode> >() != null);
return(partialroot.TraverseSubtree <object>(null, null, null, order).Select(res => res.Item1));
}
