Android and Dagger2 Construcor Injection using Named (Kotlin)

AndroidDaggerConstructorInjection.kt

interface Greeting {
    fun getData(): String
}

class GreetingRepository
    @Inject
    constructor(
            @Named(HELLO) private val hello: Greeting,
            @Named(GOODBYE) private val goodbye: Greeting
    ) {

    fun getHello() = hello.getData()
    fun getGoodbye() = goodbye.getData()
}

@Module
class GreetingModule {
    @Provides
    @Named(HELLO)
    fun provideHello(): Greeting = Hello("Hello from Dagger2!!!")

    @Provides
    @Named(GOODBYE)
    fun provideGoodbye(): Greeting = Goodbye("Goodbye from Dagger2!!!")

    @Provides
    fun provideGreetingRepository(
            @Named(HELLO) hello: Greeting,
            @Named(GOODBYE) goodbye: Greeting) = GreetingRepository(hello, goodbye)
}

class Hello(val text: String = "Hello from the model!!!"): Greeting {
    override fun getData() = text
}

class Goodbye(val text: String = "Goodbye from the model!!!"): Greeting {
    override fun getData() = text
}

// in the activity/fragment/etc
@Inject lateinit var repository: GreetingRepository

// Note: HELLO and GOODBYE are string constants