def get_objective_bank_form_for_update(self, objective_bank_id=None):
if objective_bank_id is None:<EOL><INDENT>raise NullArgument()<EOL><DEDENT>try:<EOL><INDENT>url_path = construct_url('<STR_LIT>',<EOL>bank_id=objective_bank_id)<EOL>objective_bank = objects.ObjectiveBank(self._get_request(url_path))<EOL><DEDENT>except Exception:<EOL><INDENT>raise<EOL><DEDENT>objective_bank_form = objects.ObjectiveBankForm(objective_bank._my_map)<EOL>self._forms[objective_bank_form.get_id().get_identifier()] = not UPDATED<EOL>return objective_bank_form<EOL>
Gets the objective bank form for updating an existing objective
        bank.
        A new objective bank form should be requested for each update
        transaction.
        arg:    objectiveBankId (osid.id.Id): the Id of the
                ObjectiveBank
        return: (osid.learning.ObjectiveBankForm) - the objective bank
                form
        raise:  NotFound - objectiveBankId is not found
        raise:  NullArgument - objectiveBankId is null
        raise:  OperationFailed - unable to complete request
        raise:  PermissionDenied - authorization failure
        compliance: mandatory - This method must be implemented.