async def METHOD_NAME(self, client, index_client, storage_cs, container_name):
    name = "cou"
    indexer = await self._prepare_indexer(client, index_client, storage_cs, name, container_name)
    await client.create_indexer(indexer)
    expected = len(await client.get_indexers())
    indexer.description = "updated"
    await client.create_or_update_indexer(indexer)
    assert len(await client.get_indexers()) == expected
    result = await client.get_indexer(name)
    assert result.name == name
    assert result.description == "updated"