/**
  * Flowのモジュール
  * @param Flow $flow
  */
 public function flow_verify(Flow $flow)
 {
     if (!$flow->is_sessions("_onetimeticket") || $flow->in_vars("_onetimeticket") !== $flow->in_sessions("_onetimeticket")) {
         $flow->vars("_onetimeticket", $flow->in_sessions("_onetimeticket"));
         return false;
     }
     return true;
 }