AppComponent.kt

@Singleton
@Component(
 modules = [
 AndroidSupportInjectionModule::class,
 ActivityBuilder::class,
 AppSubcomponents::class,
 AppModule::class
 ]
)
interface AppComponent : AndroidInjector<App> {
 @Component.Factory
 interface Factory : AndroidInjector.Factory<App>
// expose session manager to control lifecycle of SessionComponent
 fun sessionManager(): SessionManager
}