Gate::allows PHP Method

        public static function allows($ability, $arguments = array())
        {
            return \Illuminate\Auth\Access\Gate::allows($ability, $arguments);
        }

 /**
  * Handle an incoming request.
  *
  * @param  \Illuminate\Http\Request  $request
  * @param  \Closure  $next
  * @return mixed
  */
 public function handle($request, \Closure $next)
 {
     if (\Gate::allows("admin")) {
         return $next($request);
     }
     die(view("unauthorized"));
 }