@abc.abstractmethod<EOL><INDENT>def register_for_deleted_banks(self):<DEDENT>
pass<EOL>
Registers for notification of deleted banks.

        ``BankReceiver.deletedBanks()`` is invoked when a bank is
        deleted.

        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure occurred

        *compliance: mandatory -- This method must be implemented.*