Método getPosts

PostsViewModel.kt

fun takePosts() {
    compositeDisposable + useCase.takePosts()
        .subscribeOn(appSchedulers.io)
        .observeOn(appSchedulers.main)
        .doOnSubscribe { _displayingView.value = DisplayingView.Loading.ordinal }
        .subscribeBy(onError = {
            _displayingView.value = DisplayingView.Error.ordinal
            _errorMessage.value = it.message ?: DEFAULT_ERROR_MESSAGE
        }, onSuccess = { result ->
            if (result.isNotEmpty()) {
                _postsResult.value = result
                _displayingView.value = DisplayingView.Success.ordinal
            } else {
                _displayingView.value = DisplayingView.Empty.ordinal
            }
        })
}