@utilities.arguments_not_none<EOL><INDENT>def search_among_catalogs(self, catalog_ids):<DEDENT>
self._id_list = catalog_ids<EOL>
Execute this search among the given list of catalogs.

        arg:    catalog_ids (osid.id.IdList): list of catalogs
        raise:  NullArgument - ``catalog_ids`` is ``null``
        *compliance: mandatory -- This method must be implemented.*