protected function registerCommands()
    {
        $this->app->singleton('command.verification.make', function ($app) {
            return new MakeVerificationCommand($app['composer']);
        });

        $this->app->singleton('command.verification.clear', function ($app) {
            return new ClearVerificationTokensCommand();
        });

        $this->commands('command.verification.make');
        $this->commands('command.verification.clear');
    }