App\Http\Middleware\LoginAs::handle PHP Method

    public function handle($request, Closure $next)
    {
        $segments = array_reverse(request()->segments());
        if (($segments[1] ?? '') !== 'login') {
            return $next($request);
        }
        if (!$this->canLoginAs()) {
            throw new Exception("You can't log in as a specific user right now");
        }
        return $this->loginAsAndRedirect($segments[0]);
    }