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{
  "result": true,
  "data": {
    "id": 607,
    "title": "Identifier Service",
    "sequence": 3,
    "design": [
      "info",
      "question",
      "info"

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class ViewPagerChapterAdapter(
    private val fragmentList: ArrayList<Fragment>,
    fragmentManager: FragmentManager,
    lifecycle: Lifecycle
) : FragmentStateAdapter(fragmentManager, lifecycle) {

    override fun getItemCount(): Int {
        return fragmentList.size
    }

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@ExperimentalCoroutinesApi
@AndroidEntryPoint
class ViewPagerChapterFragment :
    BaseFragment<FragmentViewPagerChapterBinding, ViewPagerChapterViewModel>(R.layout.fragment_view_pager_chapter),
    OnRequestAction {

    // var region
    override val viewModel: ViewPagerChapterViewModel by viewModels()

    @Inject

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@HiltViewModel
class ViewPagerChapterViewModel @Inject constructor(
    private val api: CourseRepository
) :
    BaseViewModel() {

    // live data
    private val _chapter = MutableLiveData<Resource<ChapterModel>>()
    val chapter: LiveData<Resource<ChapterModel>>
        get() = _chapter

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@ExperimentalCoroutinesApi
@AndroidEntryPoint
class ChapterQuestionFragment(private val question: Question) :
    BaseFragment<FragmentChapterQuestionBinding, ChapterQuestionViewModel>(R.layout.fragment_chapter_question) {

    //var region
    override val viewModel: ChapterQuestionViewModel by viewModels()
    private lateinit var mCallback: OnRequestAction
    //end region

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@HiltViewModel
class ChapterQuestionViewModel @Inject constructor(
    private val api: CourseRepository
) : BaseViewModel() {
}

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@HiltViewModel
class ChapterDescriptionViewModel @Inject constructor(
    private val api: CourseRepository
) : BaseViewModel() {
}

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/**
 * @param B: DataBinding class of fragment
 * @param VM: ViewModel class of fragment
 * @param layoutId: Layout resource id of fragment
 *
 * Base class for [Fragment] instances, all common processes will be handled based on this class.
 */
abstract class BaseFragment<
        B : ViewDataBinding,
        VM : BaseViewModel>

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/**
 * Base class for [ViewModel] instances, all common processes will be handled based on this class.
 */
abstract class BaseViewModel : ViewModel() {

    var showError = MutableLiveData<String?>()

    override fun onCleared() {
        LogUtils.d("$this")
        super.onCleared()

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interface OnRequestAction {
    fun nextPage()
}