def get_assessment_offered_notification_session_for_bank(self, assessment_offered_receiver=None, bank_id=None, proxy=None):
if assessment_offered_receiver is None or proxy is None:<EOL><INDENT>raise NullArgument<EOL><DEDENT>raise Unimplemented()<EOL>
Gets the ``OsidSession`` associated with the offered assessment notification service for the given bank.

        arg:    assessment_offered_receiver
                (osid.assessment.AssessmentOfferedReceiver): the
                assessment offered receiver interface
        arg:    bank_id (osid.id.Id): the ``Id`` of the bank
        arg:    proxy (osid.proxy.Proxy): a proxy
        return: (osid.assessment.AssessmentOfferedNotificationSession) -
                a ``AssessmentOfferedNotificationSession``
        raise:  NotFound - ``bank_id`` or ``proxy`` not found
        raise:  NullArgument - ``assessment_offered_receiver, bank_id``
                or ``proxy`` is ``null``
        raise:  OperationFailed - ``unable to complete request``
        raise:  Unimplemented -
                ``supports_assessment_offered_notification()`` or
                ``supports_visible_federation()`` is ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_assessment_offered_notification()`` and
        ``supports_visible_federation()`` are ``true``.*