public function down(): void 	{ 		$this->migrator->inGroup('general', function (SettingsBlueprint $blueprint): void { 			$blueprint->delete('corvus_version'); 			$blueprint->delete('corvus_store_id'); 			$blueprint->delete('corvus_language'); 			$blueprint->delete('corvus_currency'); 			$blueprint->delete('corvus_secret_key'); 			$blueprint->delete('corvus_require_complete'); 			$blueprint->delete('corvus_success_url'); 			$blueprint->delete('corvus_cancel_url'); 		}); 	}