There's no mention of it anywhere in this scripting guide, however it comes up a bunch in the Adobe forums; - https://community.adobe.com/t5/illustrator-discussions/illustrator-crashes-when-call-action-with-app-doscript/td-p/13530584 - https://community.adobe.com/t5/illustrator-discussions/weird-app-doscript-behavior/td-p/14097963 - https://community.adobe.com/t5/illustrator-discussions/dynamic-actions-with-app-doscript-method/td-p/10569163 etc
There's no mention of it anywhere in this scripting guide, however it comes up a bunch in the Adobe forums;
etc