def get_bank_search_session(self):
raise Unimplemented()<EOL>
Gets the OsidSession associated with the bank search service.

        return: (osid.assessment.BankSearchSession) - a
                ``BankSearchSession``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_bank_search() is false``
        *compliance: optional -- This method must be implemented if
        ``supports_bank_search()`` is true.*