code: public void setKey(String newKey)
    {
      String oldKey = key;
      key = newKey;
      if (eNotificationRequired())
        eNotify(new ENotificationImpl(this, Notification.SET, SimpleAntlrPackage.OPTION_VALUE__KEY, oldKey, key));
    }
docs: <!-- begin-user-doc -->
  <!-- end-user-doc -->
  @generated