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class AndroidPlaygroundActivity : DaggerAppCompatActivity()

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abstract class BaseFragment : DaggerFragment() {

    // Code emitted for brevity
}

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class DetailsFragment : BaseFragment() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val githubRepoEntity = arguments?.getParcelable<GithubRepoEntity>(REPOSITORY_KEY)
        githubRepoEntity?.let { detailsViewModel.initData(it) }
    }

    override fun onCreateView(
            inflater: LayoutInflater,

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class MainFragment : BaseFragment() {

    override fun onCreateView(
            inflater: LayoutInflater,
            container: ViewGroup?,
            savedInstanceState: Bundle?
    ): View? {
        return inflater.inflate(R.layout.fragment_main, container, false)
    }

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Toast.makeText(requireContext(), it.error, Toast.LENGTH_LONG).show()

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fun Fragment.requireAppCompatActivity(): AppCompatActivity {
    return requireActivity() as? AppCompatActivity
           ?: throw IllegalStateException("Activity this fragment is attached to does not extend AppCompatActivity")
}
requireAppCompatActivity().supportActionBar?.title = it.toolbarTitle

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<activity android:name=".ui.AndroidPlaygroundActivity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />

        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>

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@Module
interface SingleActivityModule {

    @SingleActivity
    @ContributesAndroidInjector(
            modules = [
                MyScopedModule::class
            ]
    )
    fun androidPlaygroundActivity(): AndroidPlaygroundActivity

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@Module
interface SingleActivityModule {

    @SingleActivity
    @ContributesAndroidInjector(
            modules = [
                MyScopedModule::class,
                FragmentModule::class
            ]
    )

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interface Navigator {
    fun goToDetailsFromMain(githubRepoEntity: GithubRepoEntity)
    fun goToUrl(url: String)
}