How to use the cartoview.app_manager.config.CartoviewApp.save function in cartoview

for _app in _pending_apps:
                    _app_name = _app.get("name", None)
                    _make_migrations = _app.get("makemigrations", False)
                    _migrate = _app.get("migrate", False)
                    if _app_name:
                        if _make_migrations:
                            self.makemigrations(_app_name)
                        if _migrate:
                            self.migrate(_app_name)
            else:
                self.migrate(app)
            self.collectstatic()
            carto_app = CartoviewApp.objects.get(app.name)
            carto_app.pending = False
            carto_app.commit()
            CartoviewApp.save()

def add_carto_app(self):
        if not CartoviewApp.objects.app_exists(self.name):
            CartoviewApp({
                'name': self.name,
                'active': True,
                'order': self.get_app_order(),
                'pending': True
            })
            CartoviewApp.save()
        else:
            carto_app = CartoviewApp.objects.get(self.name)
            carto_app.pending = True
            carto_app.commit()
            CartoviewApp.save()

def add_carto_app(self):
        if not CartoviewApp.objects.app_exists(self.name):
            CartoviewApp({
                'name': self.name,
                'active': True,
                'order': self.get_app_order(),
                'pending': True
            })
            CartoviewApp.save()
        else:
            carto_app = CartoviewApp.objects.get(self.name)
            carto_app.pending = True
            carto_app.commit()
            CartoviewApp.save()

def _rollback(self):
        app = CartoviewApp.objects.pop(self.name, None)
        if app:
            CartoviewApp.save()
        self.delete_app_dir()

def completely_remove(self):
        self.delete_app()
        self.delete_app_tables()
        self.delete_app_dir()
        CartoviewApp.objects.pop(self.name, None)
        CartoviewApp.save()