Optional
A callback that runs before the wizard moves back a step from this current step.
A promise that resolves to a boolean indicating whether the wizard should move back a step.
A callback that runs before the wizard cancels with this current step.
A promise that resolves to a boolean indicating whether the wizard should cancel.
A callback that runs when this step is the current step.
The step change details.
A callback that runs before the wizard moves back a step from this current step.