ExoMediaDrm.KeyRequest.RequestType (ExoPlayer library)

```
@Documented
@Retention(SOURCE)
@Target(TYPE_USE)
public static @interface ExoMediaDrm.KeyRequest.RequestType
```
Key request types. One of ExoMediaDrm.KeyRequest.REQUEST_TYPE_UNKNOWN, ExoMediaDrm.KeyRequest.REQUEST_TYPE_INITIAL, ExoMediaDrm.KeyRequest.REQUEST_TYPE_RENEWAL, ExoMediaDrm.KeyRequest.REQUEST_TYPE_RELEASE, ExoMediaDrm.KeyRequest.REQUEST_TYPE_NONE or ExoMediaDrm.KeyRequest.REQUEST_TYPE_UPDATE.