@abc.abstractmethod<EOL><INDENT>def register_for_deleted_assets(self):<DEDENT>
pass<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.*