def get_many(self, content_id_list):
        '''Yield (content_id, data) tuples for ids in list.

        As with :meth:`get`, if a content_id in the list is missing,
        then it is yielded with a data value of `None`.

        :type content_id_list: list<str>
        :rtype: yields tuple(str, :class:`dossier.fc.FeatureCollection`)

        '''
        content_id_keys = [tuplify(x) for x in content_id_list]
        for row in self.kvl.get(self.TABLE, *content_id_keys):
            content_id = row[0][0]
            data = row[1]
            if data is not None:
                data = fc_loads(data)
            yield (content_id, data)
Yield (content_id, data) tuples for ids in list.

        As with :meth:`get`, if a content_id in the list is missing,
        then it is yielded with a data value of `None`.

        :type content_id_list: list<str>
        :rtype: yields tuple(str, :class:`dossier.fc.FeatureCollection`)