JFace Wizard hiding and displaying button bar - swt

I am new to JFace Wizard development, so forgive me if my question sounds weird.
I have requirement where my first WizardPage should not display button bar, This I have achieved by extending WizardDialog and implementing createButtonsForButtonBar() method.
Now second wizardpage will load when user do some action on first page(Click button on page). This second wizard page should have button bar. I am not able to show the button bar on second page. I tried exploring JFace code but couldn't find any way to do it.
Can someone confirm whether it is possible or not? If yes, Can you give me some pointers to do it?
Thanks in Advance for you time.

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