This event occurs after insert, update, delete actions. It can be used to pass additional values to client side.
Example of usage:
//adds new xml as a child of default <action> tag which is passed to client side as response class CustomBehavior extends ConnectorBehavior{ @Override public void beforeProcessing(DataAction data) { data.set_response_xml("<guid>some value</guid>"); } } component.event.attach(new CustomBehavior());