def register_account_page_class(cls):
 warn(u'register_account_page_class is deprecated in Review Board 3.0 and will be removed; use AccountPage.registry.register instead.', DeprecationWarning)
 AccountPage.registry.register(cls)

def register_account_page_class ( cls ) : warn ( u'register_account_page_class is deprecated in Review Board 3.0 and will be removed; use AccountPage.registry.register instead.' , DeprecationWarning ) AccountPage . registry . register ( cls )
register a custom account page class .