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

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