private function recordMessage($accountId, $content)
 {
     $message = new Message();
     $message->title = 'member_card_expiration_reminder';
     $message->accountId = $accountId;
     $message->status = Message::STATUS_WARNING;
     $message->to = ['id' => Message::ID_ACCOUNT, 'target' => Message::TO_TARGET_ACCOUNT];
     $message->sender = ['id' => Message::ID_SYSTEM, 'from' => Message::SENDER_FROM_SYSTEM];
     $message->content = $content;
     $message->save();
 }