@HiltAndroidApp
class UserApplication  : Application()

  <application
        android:name=".UserApplication"
    ....

    <uses-permission android:name="android.permission.INTERNET"></uses-permission>

@Module
@InstallIn(SingletonComponent::class)
object UserModule {

    @Provides
    @Singleton
    fun providesUserApi() : UserApi {
        return Retrofit.Builder()
           .baseUrl(UserApi.BASE_URL)
           .addConverterFactory(GsonConverterFactory.create())
           .build().create()
    }

    @Provides
    @Singleton
    fun providesUserRepository(
        userApi : UserApi
    ) : UserRepository {
        return UserRepositoryImpl(userApi)
    }
}