@abc.abstractmethod<EOL><INDENT>def get_question_form_for_update(self, question_id):<DEDENT>
return<EOL>
Gets the question form for updating an existing question.

        A new question form should be requested for each update
        transaction.

        :param question_id: the ``Id`` of the ``Question``
        :type question_id: ``osid.id.Id``
        :return: the question form
        :rtype: ``osid.assessment.QuestionForm``
        :raise: ``NotFound`` -- ``question_id`` is not found
        :raise: ``NullArgument`` -- ``question_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure occurred

        *compliance: mandatory -- This method must be implemented.*