Returns a reference to the list of handlers that have been defined to trigger when the field’s value is updated by the user. Because this method returns a reference to the actual list (and not a copy), any changes you make to this list will directly affect the defined handlers. This method is intended to be used in the customize method defined in your implementation of the B25.Form.Customizable interface. Using it anywhere else, such as inside one of your event handlers, will not have any effect.
Adds the given handler to the list of handlers that have been defined to trigger when the field’s value is updated by the user. This method is a convenience method, and is identical to calling onUpdate().add(B25.FormEventHandler handler).
Calling this method allows you to directly set the value of the field. Unlike the value being updated by the user on the form, this action will not trigger any event handlers. Use this method inside your own handlers.