An interface that marks a model as providing an overview component for the wizard.
If the models implements this interface, the overview will be displayed in the left pane of
the wizard. The overview can be hidden by calling
Wizard.setOverviewVisible with a
value of false.
Called to get a component that provides an overview of the wizard. This component will be
shown in the wizard on the side corresponding the
java.awt.BorderLayout.LINE_START .
a componet that provides an overview of the wizard progress.