Every now and then we have to download patches from gerrit and it's painful (click on download, then copy, paste, run).
tuleap-dev.php should be able to that for us with just the URL we are currently browsing like
php tools/utils/tuleap-dev.php gerrit:download https://gerrit.tuleap.net/c/tuleap/+/15373
The purpose of this contribution is to enable "just that", I don't want to cover all use cases.