/**
  * Execute the job.
  * @param Excel $excel
  */
 public function handle(Excel $excel)
 {
     $excel->create($this->product->code, function ($excel) {
         $excel->sheet($this->product->code, function ($sheet) {
             $codes = $this->codes or $this->product->codes()->get(['code']);
             $sheet->fromArray($codes);
         });
     })->download('xlsx');
 }