private function getRetailerCollection()
    {
        $retailerCollection = $this->retailerCollectionFactory->create();
        $retailerCollection->addAttributeToSelect(
            ['name', 'seller_code', 'contact_phone', 'contact_fax', 'contact_mail']
        );
        $retailerCollection->addFieldToFilter('allow_store_delivery', 1);
        $retailerCollection->addFieldToFilter('is_active', 1);
        $retailerCollection->addOrder('name', 'asc');

        return $retailerCollection;
    }