Logo URL for overriding image

With terminal-notifier, you have the ability to customize the Logo URL for your notification.

However, that's not possible with mack because terminal-notifier uses an undocumented API to do that, that's not available to applications using AppleScript. julienXX/terminal-notifier#292

Just wanted to link this here since that was my first question, was why I couldn't do images with mack.