| 123456789101112131415161718192021222324252627282930 | import 'package:dartz/dartz.dart';import 'package:appflowy_backend/dispatch/dispatch.dart';import 'package:appflowy_backend/appflowy_backend.dart';import 'package:appflowy_backend/protobuf/flowy-error/errors.pb.dart';import 'package:appflowy_backend/protobuf/flowy-user/user_profile.pb.dart';import 'package:appflowy_backend/protobuf/flowy-user/user_setting.pb.dart';class UserSettingsBackendService {  Future<AppearanceSettingsPB> getAppearanceSetting() async {    final result = await UserEventGetAppearanceSetting().send();    return result.fold(      (AppearanceSettingsPB setting) {        return setting;      },      (error) {        throw FlowySDKException(ExceptionType.AppearanceSettingsIsEmpty);      },    );  }  Future<Either<UserSettingPB, FlowyError>> getUserSetting() {    return UserEventGetUserSetting().send();  }  Future<Either<Unit, FlowyError>> setAppearanceSetting(      AppearanceSettingsPB setting) {    return UserEventSetAppearanceSetting(setting).send();  }}
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