This is a view controller for one of the steps in the wizard. All buttons of the action-bar that
is shown on each view of the wizard are defined in the AbstractWizardController class. The definition of the
actions that are registered to these buttons can be found in the
Tutorial4Main class.
As you can see in the wizard3.fxml file a hyperlink is defined in the view. This link should print
the some help on the console. To do so a action is defined in the
Tutorial4Main class. This action
is defined by the unique id "help". By injecting the Hyperlink instance in the controller with the use of
the @FXML annotation the hyperlink node can be bound to the action by using the
ActionTrigger annotation.
So once the hyperlink will be clicked the action that is registered with the "help" id will be called.