protected function senders()
{
$this->app->singleton('notifynder.sender', function ($app) {
return new SenderManager($app['notifynder.sender.factory'], $app['notifynder.store'], $app[Container::class]);
});
$this->app->singleton('notifynder.sender.factory', function ($app) {
return new SenderFactory($app['notifynder.group'], $app['notifynder.category']);
});
}