code: public static BartenderSystem
    createAndAddSystem(BartenderBuilder builder)
    {
      BartenderSystemBare systemBartender
        = new BartenderSystemBare(builder);
      
      SystemManager system = preCreate(BartenderSystem.class);
  
      system.addSystem(BartenderSystem.class, systemBartender);
      
      return systemBartender;
    }
docs: Creates a new network cluster service.