async def METHOD_NAME(self, client, index_client, storage_cs, container_name):
    name = "delunch"
    indexer = await self._prepare_indexer(client, index_client, storage_cs, name, container_name)
    result = await client.create_indexer(indexer)
    etag = result.e_tag
    indexer.description = "updated"
    await client.create_or_update_indexer(indexer)
    indexer.e_tag = etag
    with pytest.raises(HttpResponseError):
        await client.delete_indexer(indexer, match_condition=MatchConditions.IfNotModified)