public function &GetFieldPkgShopWishlistMailHistoryList()
    {
        $oWishlistHistoryItems = $this->GetFromInternalCache('oPkgShopWishlistMailHistoryList');
        if (is_null($oWishlistHistoryItems)) {
            $oWishlistHistoryItems = TdbPkgShopWishlistMailHistoryList::GetListForPkgShopWishlistId($this->id, $this->iLanguageId);
            $oWishlistHistoryItems->bAllowItemCache = true;
            $this->SetInternalCache('oPkgShopWishlistMailHistoryList', $oWishlistHistoryItems);
        }

        return $oWishlistHistoryItems;
    }