UserDataSourceFactory.kt

class UserDataSourceFactory(private val repository: UserRepository,
                            private var query: String = "",
                            private var sort: String = "",
                            private val scope: CoroutineScope): DataSource.Factory<Int, User>() {

    val source = MutableLiveData<UserDataSource>()

    override fun create(): DataSource<Int, User> {
        val source = UserDataSource(repository, query, sort, scope)
        this.source.postValue(source)
        return source
    }

    // ...
}