painless-dagger-service-module.kt

@Module
class ServiceModule {
    @Provides
    @Singleton
    fun providesRetrofit(): Retrofit {
        return Retrofit.Builder()
        .baseUrl("https://api.github.com/")
        .build();
    }
    
    @Provides
    @Singleton
    fun providesService(): GitHubService {
        return retrofit.create(GitHubService.class);
    }
}