# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2020-07-24 13:36:45 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/1286656569388732417) RT @olebegemann: Jens Ayton shows a nice technique to ensure you call the completion handler from every branch in a complex async function:…