@abc.abstractmethod<EOL><INDENT>def get_objective_notification_session_for_objective_bank(self, objective_receiver, objective_bank_id, proxy):<DEDENT>
return<EOL>
Gets the ``OsidSession`` associated with the objective notification service for the given objective bank.

        :param objective_receiver: the objective receiver
        :type objective_receiver: ``osid.learning.ObjectiveReceiver``
        :param objective_bank_id: the ``Id`` of the objective bank
        :type objective_bank_id: ``osid.id.Id``
        :param proxy: a proxy
        :type proxy: ``osid.proxy.Proxy``
        :return: ``an _objective_notification_session``
        :rtype: ``osid.learning.ObjectiveNotificationSession``
        :raise: ``NotFound`` -- ``objective_bank_id`` not found
        :raise: ``NullArgument`` -- ``objective_receiver, objective_bank_id`` or ``proxy`` is ``null``
        :raise: ``OperationFailed`` -- ``unable to complete request``
        :raise: ``Unimplemented`` -- ``supports_objective_notification()`` or ``supports_visible_federation()`` is ``false``

        *compliance: optional -- This method must be implemented if
        ``supports_objective_notification()`` and
        ``supports_visible_federation()`` are ``true``.*