public function delete(Node\NodeInterface $node)
	{
		$left = $node->getLeftValue();
		$right = $node->getRightValue();
		foreach ($this->array as $key => $item) {
			if ($item->getLeftValue() >= $left && $item->getRightValue() <= $right) {
				unset($this->array[$key]);
			}
		}
	}