API endpoint for User Groups?

I am super terrible at searching or picking the right keywords, but I am completely stumped on whether I can use the API to get a list of User Groups. I searched the Swagger page ( https://www.logicmonitor.com/support/rest-api-v3-swagger-documentation ) for user group, group, and looked through everything, and I cannot find a GET command to pull back a list of User Groups. I'm talking about the section under settings where you can make Users or User Groups, like if you wanted to organize "Department 1" and "Department 2" or "Ungrouped" under your users list.

Can anyone tell me the endpoint for getting a list of User Groups?

I swear I've combed the API swagger doc for every occurrence of group on the page, and found nothing. Maybe it doesnt exist in V3? Or maybe I'm terrible at searching. :) I would just grab all the users and brute force a list, except I am specifically wanting to interact with any empty User Groups as well, so I have no idea how I would find them with the API

Thanks, and sorry for such a basic question.