úÎ$´ Safe-InferedFrom  fb-persistent'. Since 0.1.3. Note that your fields  should either be of type  or  , not a polymorphic  kind.  Expiration time of s is saved with  precision of one second. From  fb-persistent. Since 0.1.2. From  fb-persistent. Since 0.1.    fb-persistent-0.1.3Facebook.Persistent$fPersistFieldAccessTokenfb-0.9.6Facebook.TypesUserAccessTokenAppAccessToken AccessToken$fPersistFieldId$fPersistFieldAction$fAccessTokenKindAppKind$fAccessTokenKindUserKind