code: public function handle(Request $request, Closure $next)
      {
          $validation = $this->validateShop($request);
          if ($validation !== true) {
              return $validation;
          }
  
          return $this->response($request, $next);
      }
docs: Handle an incoming request.
  
  @param \Illuminate\Http\Request $request
  @param \Closure                 $next
  
  @return mixed