code: @Override
      protected void init() {
          handlers = new ZoneEventHandlerCenter()
                  .addHandlers(handlerClasses, 
                          context.getUserClass(),
                          context.getGameUserClasses());
      }
docs: /*
  (non-Javadoc)
  
  @see com.tvd12.ezyfox.sfs2x.serverhandler.ServerUserEventHandler#init()