Possible response content types.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/enums/response_content_type.proto)

| Enums ||
|---|---|
| ## `MUTABLE_RESOURCE` | The mutate response will contain the resource name and the resource with mutable fields if possible. Otherwise, only the resource name will be returned. |
| ## `RESOURCE_NAME_ONLY` | The mutate response will be the resource name. |
| ## `UNSPECIFIED` | Not specified. Will return the resource name only in the response. |