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   // :app module

   override fun detailIntent(context: Context, productId: String): Intent {
        // old way
        // return DetailActivity.starterIntent(context = context, productId = productId)

        // new way
        return Class.forName("com.nlgtuankiet.modularization.detail.DetailActivity")
            .getDeclaredMethod("starterIntent", Context::class.java, String::class.java)
            .invoke(null, context, productId) as Intent

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// :detail module

class DetailActivity : DaggerAppCompatActivity() {
    // omitted

    companion object {
        @JvmStatic
        @Keep
        fun starterIntent(context: Context, productId: String): Intent {
            return Intent(context, DetailActivity::class.java).apply {

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class DetailActivity : DaggerAppCompatActivity() {
    // omitted

    companion object {
        @JvmStatic
        fun starterIntent(context: Context, productId: String): Intent {
            return Intent(context, DetailActivity::class.java).apply {
                putExtra("productId", productId)
            }
        }

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// app/build.gradle
apply plugin: 'com.android.application'

def include(moduleName) {
    if (hasProperty('only')) {
        return only.split(",").contains(moduleName)
    }
    return true
}

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   new ListUpdateCallback() {
        @Override
        public void onInserted(int position, int count) {
            adapterCallback.onInserted(position + 1, count);
        }

        @Override
        public void onRemoved(int position, int count) {
            adapterCallback.onRemoved(position + 1, count);
        }

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class MainAdapter : PagedListAdapter<ItemViewModel, MainAdapter.ItemViewHolder>(ItemCallback) {

    override fun getItemViewType(position: Int): Int {
        return when (getItem(position)) {
            is BannerView.Model -> 1
            // bla bla
            else -> 0 // loading model
        }
    }

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class MainModelDataSource @Inject constructor(
    private val args: MainArgs,
    private val getBanner: GetBanner,
    private val getCategory: GetCategory,
    private val getDeal: GetDeal,
    private val getMainLayout: GetMainLayout
) : PageKeyedDataSource<Int, ItemViewModel>() {
    private lateinit var layout: List<MainViewType>
    private val totalItemCount: Int by lazy {
        layout.map { viewType ->

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class MainController : PagedListEpoxyController<EpoxyModel<*>>() {
    override fun buildItemModel(currentPosition: Int, item: EpoxyModel<*>?): EpoxyModel<*> {
        return item ?: LoadingViewModel_()
            .id("loading $currentPosition")
            .content("loading $currentPosition")
    }
}

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override fun getItemViewType(position: Int): Int {
    return when (getItem(position)) {
        is BannerView.Model -> 1
        is CategoryView.Model -> 2
        is DealView.Model -> 3
        is SeparatorView.Model -> 4
        else -> 0 // loading model
    }
}

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private object ItemCallback : DiffUtil.ItemCallback<ItemViewModel>() {
    override fun areItemsTheSame(oldItem: ItemViewModel, newItem: ItemViewModel): Boolean {
        return when {
            oldItem is BannerView.Model && newItem is BannerView.Model -> oldItem.id == newItem.id
            oldItem is DealView.Model && newItem is DealView.Model -> oldItem.id == newItem.id
            oldItem is CategoryView.Model && newItem is CategoryView.Model -> oldItem.id == newItem.id
            oldItem is SeparatorView.Model && newItem is SeparatorView.Model -> oldItem.id == newItem.id
            else -> false
        }
    }