# File lib/merb/session/active_record_session.rb, line 5
    def setup_session
      before = cookies[_session_id_key]
      request.session, cookies[_session_id_key] = Merb::ActiveRecordSession.persist(cookies[_session_id_key])
      @_fingerprint = Marshal.dump(request.session.data).hash
      @_new_cookie = cookies[_session_id_key] != before
    end