Method: (MAKE-NEXT-FRAME STANDARD-SESSION-FRAME T)

Source

(defmethod make-next-frame ((f standard-session-frame) new-id)
  (make-instance 'standard-session-frame
                 :generating-frame f
                 :backtracks (clone-backtracks (frame.backtracks f))
                 :window-component (frame.window-component f)
                 :id new-id))