code: public void add(UIComponent... components)
  	{
  		for (UIComponent component : components)
  		{
  			if (component != null && component != this)
  			{
  				content.components.add(component);
  				component.setParent(this);
  				component.register(this);
  			}
  		}
  		onContentUpdate();
  	}
docs: Adds components to this {@link UIContainer}.
  
  @param components the components