code: public static AjaxOperation registerComponents(final List<String> targetIds, final String triggerId) {
  		AjaxOperation operation = new AjaxOperation(triggerId, targetIds);
  		registerAjaxOperation(operation);
  		return operation;
  	}
docs: Registers one or more components as being AJAX capable.
  
  @param targetIds the components to register. Each component will be re-painted when the trigger occurs.
  @param triggerId the id of the trigger that will cause the components to be painted.
  @return the AjaxOperation control configuration object.