/**
     * @return array
     */
    protected function initNavParams()
    {
        global $NavNum;

        $navParams = [
            'NAV_NUM'            => ++$NavNum,
            'PAGE_NUMBER'        => 1,
            'PAGE_ELEMENT_COUNT' => 20,
        ];

        $unique = md5($this->getEntity()->getDBTableName());
        $pageKey = 'PAGEN_'.$navParams['NAV_NUM'];
        $sizeKey = 'SIZEN_'.$navParams['NAV_NUM'];
        $sessionPageKey = $unique.$pageKey;
        $sessionSizeKey = $unique.$sizeKey;


        /** @noinspection PhpDynamicAsStaticMethodCallInspection */
        if (\CPageOption::GetOptionString('main', 'nav_page_in_session', 'Y') == 'Y') {
            if (isset($_SESSION[$sessionPageKey]) && (int)$_SESSION[$sessionPageKey]) {
                $navParams['PAGE_NUMBER'] = (int)$_SESSION[$sessionPageKey];
            }
            if (isset($_SESSION[$sessionSizeKey]) && (int)$_SESSION[$sessionSizeKey]) {
                $navParams['PAGE_ELEMENT_COUNT'] = (int)$_SESSION[$sessionSizeKey];
            }
        }

        if (isset($_REQUEST[$pageKey]) && (int)$_REQUEST[$pageKey]) {
            $navParams['PAGE_NUMBER'] = (int)$_REQUEST[$pageKey];
        }
        if (isset($_REQUEST[$sizeKey]) && (int)$_REQUEST[$sizeKey]) {
            $navParams['PAGE_ELEMENT_COUNT'] = (int)$_REQUEST[$sizeKey];
        }

        if (!(int)$navParams['PAGE_NUMBER']) {
            $navParams['PAGE_NUMBER'] = 1;
        }

        if (!(int)$navParams['PAGE_ELEMENT_COUNT']) {
            $navParams['PAGE_ELEMENT_COUNT'] = 20;
        }

        /** @noinspection PhpDynamicAsStaticMethodCallInspection */
        if (\CPageOption::GetOptionString('main', 'nav_page_in_session', 'Y') == 'Y') {
            $_SESSION[$sessionPageKey] = $navParams['PAGE_NUMBER'];
            $_SESSION[$sessionSizeKey] = $navParams['PAGE_ELEMENT_COUNT'];
        }

        return $navParams;
    }

    /**
     * @param $navParams
     * @param $filter
     * @param $runtime
     */
    protected function initPagination($navParams, $filter, $runtime)
    {
        $params = [
            'select' => [new ExpressionField('CNT', $this->useFoundRows ? 'FOUND_ROWS()' : 'COUNT(1)')],
        ];
        if (!$this->useFoundRows) {
            $params['filter'] = $filter;
            $params['runtime'] = $runtime;
        }

        $total = (int)call_user_func([$this->entity->getDataClass(), 'getList'], $params)->fetch()['CNT'];

        $adminResult = new \CAdminResult([], $this->entity->getDBTableName());
        $adminResult->NavPageCount = ceil($total / $navParams['PAGE_ELEMENT_COUNT']);
        $adminResult->NavPageNomer = $navParams['PAGE_NUMBER'];
        $adminResult->NavNum = $navParams['NAV_NUM'];
        $adminResult->NavPageSize = $navParams['PAGE_ELEMENT_COUNT'];
        $adminResult->NavRecordCount = $total;

        $this->list->NavText($adminResult->GetNavPrint($this->getTitle()));
    }