AN_Cloud Function: Application class.

App.kt

override fun onCreate() {
    super.onCreate()
    initFirebase()
    this.getRCF().setDefaultRC()
}
private fun initFirebase() {
    FirebaseApp.initializeApp(this)
    firebaseRemoteConfig = FirebaseRemoteConfig.getInstance()
    val configSettings = FirebaseRemoteConfigSettings.Builder()
            .setFetchTimeoutInSeconds(0)
            .setMinimumFetchIntervalInSeconds(0)
            .build()
    firebaseRemoteConfig?.setConfigSettingsAsync(configSettings)
    FirebaseMessaging.getInstance().subscribeToTopic(PUSH_RC)
}