iphone - iOS FBConnect access_token and resuming -

i using fbconnect in ios app, latest version of fbconnect-ios.

the github docs claim no "resume" function available fbconnect sessions because developer not responsible storing access_token information. link here

this , good, , can grab access_token string using [_facebook access_token]; however, can't figure out how resume session using token user doesn't have login every time app opened.

does know how resume session using access_token key?

many thanks! brett

just call [_facebook issessionvalid] function check session.