code: func (s *Server) initializeSessionTimers() error {
  	// Scan all sessions and reset their timer
  	state := s.fsm.State()
  	_, sessions, err := state.SessionList(nil)
  	if err != nil {
  		return err
  	}
  	for _, session := range sessions {
  		if err := s.resetSessionTimer(session.ID, session); err != nil {
  			return err
  		}
  	}
  	return nil
  }
docs: // initializeSessionTimers is used when a leader is newly elected to create
  // a new map to track session expiration and to reset all the timers from
  // the previously known set of timers.