ActivityModule_ContributesMainActivity.java

@Module(subcomponents = ActivityModule_ContributesMainActivity.MainActivitySubcomponent.class)
public abstract class ActivityModule_ContributesMainActivity {
  private ActivityModule_ContributesMainActivity() {}

  @Binds
  @IntoMap
  @ActivityKey(MainActivity.class)
  abstract AndroidInjector.Factory<? extends Activity> bindAndroidInjectorFactory(
      MainActivitySubcomponent.Builder builder);

  @Subcomponent(modules = FragmentBuildersModule.class)
  public interface MainActivitySubcomponent extends AndroidInjector<MainActivity> {
    @Subcomponent.Builder
    abstract class Builder extends AndroidInjector.Builder<MainActivity> {}
  }
}