public function GetAddFilterURL($sListFilterItemId)
    {
        $oActiveListFilter = TdbPkgShopListfilter::GetActiveInstance();
        $aURLData = $oActiveListFilter->GetCurrentFilterAsArray();
        $aURLData = $this->ClearOtherCategoryTreeFilter($aURLData, $sListFilterItemId);
        $aURLData[TdbPkgShopListfilterItem::URL_PARAMETER_FILTER_DATA][$sListFilterItemId][] = $this->oRealCategory->id;
        $aURLData[TdbPkgShopListfilter::URL_PARAMETER_IS_NEW_REQUEST] = '1';

        return $this->getActivePageService()->getLinkToActivePageRelative($aURLData);
    }