Shadow Customer List Tokens

I’ve been looking for a possible solution to do this and found some similar requests made in these posts:
Delete customer access tokens
Get list of customer access tokens

I was wondering if this sort of feature had been implemented yet? I have a product with shadow customers and I need to be able to list tokens that were generated with the scope of a specific customer. If I hit the list tokens endpoint with my developer username and password it will list the tokens created by my clients but only those with client_credentials grant type. Using the 2 legged auth model it would be great to make sure that when a customer logs out of their account in my app that all existing access tokens for their account are deleted as well.