some_repository.dart

class SomeRepository implements ISomeRepository {
    SomeRepository({
        required ILocalDataSource localDataSource,
        required IRemoteDataSource remoteDataSource,
    }) :  _localDataSource = localDataSource,
          _remoteDataSource = remoteDataSource;

    final ILocalDataSource _localDataSource;
    final IRemoteDataSource _remoteDataSource;
}