class MyApp : Application() {
    val database: AppDatabase by lazy { AppDatabase.getInstance(this) }
    val dataRepository: DataRepository by lazy { DataRepository(database.documentDao) }
}

class App : Application {
  companion object {
    lateinit var appInstance: App

    val dateabase: AppDatabase by lazy { AppDatabase.getInstance(appInstance) }
  }

  onCreate {
    appInstance = this
  }
}