postViewModel.kt

class MainViewModel : ViewModel() {
    val api = NetworkConfiguration.getPlaceholderApi()

    private val mutablePostData = MutableLiveData<List<Post>>()

    val postData: LiveData<List<Post>>
        get() = mutablePostData

    fun fetchPosts() {
        api.getPosts().enqueue(object : Callback<List<Post>> {
            override fun onResponse(call: Call<List<Post>>, response: Response<List<Post>>) {
                if (response.isSuccessful) {
                    mutablePostData.postValue(response.body())
                } else {
                    // Handle Unsuccessful response
                }
            }

            override fun onFailure(call: Call<List<Post>>, t: Throwable) {
                // Handle error
            }
        })
    }
}