League\CommonMark\Delimiter\DelimiterStack::removeDelimiter PHP Метод

    public function removeDelimiter(Delimiter $delimiter)
    {
        if ($delimiter->getPrevious() !== null) {
            $delimiter->getPrevious()->setNext($delimiter->getNext());
        }
        if ($delimiter->getNext() === null) {
            // top of stack
            $this->top = $delimiter->getPrevious();
        } else {
            $delimiter->getNext()->setPrevious($delimiter->getPrevious());
        }
    }