https://developers.google.com/admob/android/reference/com/google/android/gms/ads/AdError?hl=de
AdError | Android | Google for Developers
androidgoogledevelopers
https://developers.google.cn/ad-manager/dynamic-ad-insertion/sdk/android/api/reference/com/google/ads/interactivemedia/v3/api/AdError
AdError | IMA DAI SDK for Android | Google for Developers
sdk for androidimadaigoogledevelopers