App\Providers\UserServiceProvider::registerMailRepository PHP Method

    private function registerMailRepository()
    {
        $this->app->singleton(['xe.user.emails' => UserEmailRepositoryInterface::class], function ($app) {
            return new UserEmailRepository(UserEmail::class);
        });
        $this->app->singleton(['xe.user.pendingEmails' => PendingEmailRepositoryInterface::class], function ($app) {
            return new PendingEmailRepository(PendingEmail::class);
        });
    }