@abc.abstractmethod<EOL><INDENT>def search_among_gradebooks(self, gradebook_ids):<DEDENT>
pass<EOL>
Execute this search among the given list of gradebooks.

        :param gradebook_ids: list of gradebooks
        :type gradebook_ids: ``osid.id.IdList``
        :raise: ``NullArgument`` -- ``gradebook_ids`` is ``null``

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