Refresh JWT token spring boot connect add-on

[Glib Briia]

There have been a few discussion already on how to refresh jwt token on client side. 

One of the suggestions was to implement a 'heartbeat' endpoint and refresh the token before it expires. I've decided to go down that route. Since token expires in 15 mins the plan is to call heartbeat endpoint once every 14 mins to refresh the token and stored in meta tags so all subsequent ajax calls can use it. 

The question is if there is an easy accessible api in sprint-boot-atlassian-connect-jwt which I can utilize in back-end to refresh the token?