@abc.abstractmethod<EOL><INDENT>def move_gradebook_column(self, front_gradebook_column_id, back_gradebook_column_id):<DEDENT>
pass<EOL>
Moves a gradebook column in front of another.

        :param front_gradebook_column_id: the ``Id`` of a ``GradebookColumn``
        :type front_gradebook_column_id: ``osid.id.Id``
        :param back_gradebook_column_id: the ``Id`` of a ``GradebookColumn``
        :type back_gradebook_column_id: ``osid.id.Id``
        :raise: ``NotFound`` -- ``front_gradebook_column_id or back_gradebook_column_id`` is not found
        :raise: ``NullArgument`` -- ``front_gradebook_column_id or back_gradebook_column_id`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure

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