lumen-generators/lumen-test/app/Providers/AppServiceProvider.php

<?php

namespace App\Providers;

use Illuminate\Support\ServiceProvider;

class AppServiceProvider extends ServiceProvider
{
    /**
     * Register any application services.
     *
     * @return void
     */
    public function register()
    {
        // Adding providers for local development
        $this->app->register('Wn\Generators\CommandsServiceProvider');
    }
}