code: public void associate(HttpSession context) {
  		try {
  			context.setAttribute(COMPONENTS, new ConcurrentHashMap<Descriptor<?>, Object>());
  		} catch (Exception e) {
  			logger.debug("HTTP session is disabled or invalid in the current environment", e);
  		}
  	}
docs: Associates the current {@code HttpSession} with this instance.
  
  @param context The current {@code HttpSession}.