论坛是平台吗

package com.example.moviedb.ui.screen.moviedetail

import androidx.lifecycle.LiveData
import androidx.lifecycle.MutableLiveData
import com.example.moviedb.data.model.Movie
import com.example.moviedb.data.repository.MovieRepository
import com.example.moviedb.ui.base.BaseViewModel
import com.example.moviedb.util.extension.addTo
import com.example.moviedb.util.extension.applyScheduler

class MovieDetailViewModel(private val repository: MovieRepository): BaseViewModel() {

private val _movieLiveData = MutableLiveData<Movie>()
val movieLiveData: LiveData<Movie>
    get() = _movieLiveData

fun getMovie(movieId: Int) {
    repository.getMovieDetail(movieId)
        .applyScheduler()
        .subscribe({
            _movieLiveData.value = it
        }, {
            it.printStackTrace()
        }).addTo(compositeDisposable)
}

}