Indicates that this CustomComponentListener will take responsibility
for noticing events from the passed component, and that the
WizardPage should not try to automatically listen on it (which it
can only do for standard Swing components and their children).
This method is invoked when the "back" button has been pushed,
to discard any data from the setings that will not been needed and for which the
normal "just hide that data" is not the desired behavior.