final taxFreeUrl = 'https://mobile.soliq.uz/my3-api/tax-free-api/mobile/';


      String url = taxFreeUrl +'set-check';
      String url = taxFreeUrl+'user/user-data?user_id=$userId';
      String url = taxFreeUrl+'user/qr/get-token/$qr_code';
      String url = taxFreeUrl+"get-checks?userId=$userId";
      String url = taxFreeUrl + "product/get-product?cashId=$userId";
      String url = taxFreeUrl + 'user/qr/set-active/$qrcode';
      String url = taxFreeUrl + 'set-check/fiscal';