public function forceEndDocument(): void
    {
        if (empty($this->stack)) {
            return;
        }

        $key = $this->keys;
        for ($i = $this->level - 1; $i > 0; --$i) {
            $value = array_pop($this->stack);
            //value
            $obj = array_pop($this->stack);
            if (!empty($key[$i])) {
                $obj[$key[$i]] = $value;
                $key[$i] = null;
            } else {
                $obj[] = $value;
            }
            if ($i > 1) {
                $this->stack[] = $obj;
            } else {
                $this->json = $obj;
            }
        }
    }