def get_item_smart_bank_session(self, bank_id=None, proxy=None):
if proxy is None:<EOL><INDENT>raise NullArgument()<EOL><DEDENT>raise Unimplemented()<EOL>
Gets the ``OsidSession`` associated with the item smart banking 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.ItemSmartBankSession) - an
                ``ItemSmartBankSession``
        raise:  NotFound - ``bank_id`` not found
        raise:  NullArgument - ``bank_id`` or ``proxy`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_item_smart_bank()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_item_smart_bank()`` and
        ``supports_visibe_federation()`` is ``true``.*