@utilities.remove_null_proxy_kwarg<EOL><INDENT>def get_item_bank_session(self):<DEDENT>
if not self.supports_item_bank():<EOL><INDENT>raise errors.Unimplemented()<EOL><DEDENT>return sessions.ItemBankSession(runtime=self._runtime)<EOL>
Gets the ``OsidSession`` associated with the item banking service.

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