How to get an access token expiration date from pluginfacebook

I am using pluginfacebook,
but i can’t find member of access token expiration date
how can i get this from your plugin without direct access to objective-c reference

Hello @yonggeon

We do not have an API call ATM that return the access token expiry time.
If we would implement that any time we will update in the forums or release notes.

Best,
Pabitra

Why do you need the expiration date of the token? If the token is expired, Facebook plugin will ask user to login again, do you mean that you have a way to go around this?

Parse module needs facebook token expiration date
I implemented c++ interface myself