Service to manage asset group asset.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/services/asset_group_asset_service.proto)
The following methods are available for this service:

- [MutateAssetGroupAssets](https://developers.google.com/google-ads/api/reference/rpc/v25/AssetGroupAssetService/MutateAssetGroupAssets)