Contains callbacks invoked when permission request is executed using Permission.RequestUserPermission.
| PermissionDenied | Executed when user chooses Deny when requesting permission. |
| PermissionDeniedAndDontAskAgain | Executed when user chooses Deny And Don't Ask Again when requesting permission. |
| PermissionGranted | Executed when user chooses Allow when requesting permission. |
| javaInterface | 代理实现的 Java 接口。 |