Medusa\Tree\PersistentRedBlackTree::isRed PHP Метод

private isRed ( Medusa\Tree\RedBlackTree $t )
$t	Medusa\Tree\RedBlackTree

    private function isRed(RedBlackTree $t)
    {
        return $t->color() === RedBlackTree::RED;
    }

PersistentRedBlackTree