def register_for_deleted_assets(self):
<EOL>MONGO_LISTENER.receivers[self._ns][self._receiver]['<STR_LIT:d>'] = True<EOL>
Registers for notification of deleted assets.

        ``AssetReceiver.deletedAssets()`` is invoked when an asset is
        deleted or removed from this repository.

        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        *compliance: mandatory -- This method must be implemented.*