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

        ``AssessmentTakenReceiver.deletedAssessmentsTaken()`` is invoked
        when an assessment taken is removed from this assessment bank.

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

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