@abc.abstractmethod<EOL><INDENT>def get_grade_system_smart_gradebook_session(self, gradebook_id):<DEDENT>
return<EOL>
Gets the session for managing smart gradebooks of grade systems.

        :param gradebook_id: the ``Id`` of the gradebook
        :type gradebook_id: ``osid.id.Id``
        :return: a ``GradeSystemSmartGradebookSession``
        :rtype: ``osid.grading.GradeSystemSmartGradebookSession``
        :raise: ``NotFound`` -- ``gradebook_id`` not found
        :raise: ``NullArgument`` -- ``gradebook_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``Unimplemented`` -- ``supports_grade_system_smart_gradebook()`` is ``false``

        *compliance: optional -- This method must be implemented if
        ``supports_grade_system_smart_gradebook()`` is ``true``.*