/**
  * Bootstrap any application services.
  *
  * @return void
  */
 public function boot()
 {
     Category::created(['Magrippis\\Providers\\AppServiceProvider', 'createDirectory']);
     Category::deleted(['Magrippis\\Providers\\AppServiceProvider', 'deleteDirectory']);
     Post::created(['Magrippis\\Providers\\AppServiceProvider', 'createDirectory']);
     Post::deleted(['Magrippis\\Providers\\AppServiceProvider', 'deleteDirectory']);
     Project::created(['Magrippis\\Providers\\AppServiceProvider', 'createDirectory']);
     Project::deleted(['Magrippis\\Providers\\AppServiceProvider', 'deleteDirectory']);
 }