Registers indexview, utilview (back function), babel views and Security views.

def _add_admin_views(self):
        """
            Registers indexview, utilview (back function), babel views and Security views.
        """
        self.indexview = self._check_and_init(self.indexview)
        self.add_view_no_menu(self.indexview)
        self.add_view_no_menu(UtilView())
        self.bm.register_views()
        if self.get_app.config.get('FAB_ADD_SECURITY_VIEWS', True):
            self.sm.register_views()
        if self.get_app.config.get('FAB_ADD_OPENAPI_VIEWS', True):
            self.openapi_manager.register_views()