Possible to validate unattended-upgrades configuration?

I edited the /etc/apt/apt.conf.d/50unattended-upgrades file (on Ubuntu 22.04.3) and intentionally introduced an error: Unattended-Upgrade::Automatic-Reboot-WithUsers "Falsed"; // instead of "false" When I restart the service it shows as running: systemctl restart unattended-upgrades.service systemctl status unattended-upgrades.service # shows "Active: active (running)" If I run unattended-upgrades --dry-run it exits without error. How do I have confidence that the configuration file is correct and will be used? With nginx there is the nginx -t command. Is there anything similar for unattended-upgrades?