docs: public NotificationChain basicSetCondition(Expression newCondition, NotificationChain msgs)
    {
      Expression oldCondition = condition;
      condition = newCondition;
      if (eNotificationRequired())
      {
        ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, SimpleExpressionsPackage.IF_CONDITION__CONDITION, oldCondition, newCondition);
        if (msgs == null) msgs = notification; else msgs.add(notification);
      }
      return msgs;
    }