I was confused because I've thought that explicitly blessing with a class name was a must. However it is just a good practice becoming significant with inheritance (which is not the case here).
Give a man a fish and you feed him for a day. Give him a fishnet and you feed him for a lifetime. Ooops! Wait a minute! What if the fishnet brakes down? He will ask for an other fishnet or worse starve to death. Better yet to teach him how to make a fishnet. But what if he forgets how to make a fishnet? It is better to teach him where to look for knowledge on how to make a fishnet. But this can also go wrong. So ultimately it is best just telling him: 'Help yourself, stupid!'