Uninstall caveat in casks

[yunhao-jiang]

Output of brew config

NA

Output of brew doctor

NA

Description of issue

Just wondering when we are writing a cask file, how to show caveat post uninstallation?
For example, Little snitch will install a network extension, which can't be uninstalled without the user manually removing it or SIP to be disabled (which I don't think it's allowed for homebrew/casks).
Is there a way to let the user know that they need to open Settings and find the network extension and manually remove it and then reboot the machine?