String oldGroupType = groupType; groupType = newGroupType;
DataType oldGroupType = groupType; groupType = newGroupType == null ? GROUP_TYPE_EDEFAULT : newGroupType; boolean oldGroupTypeESet = groupTypeESet; groupTypeESet = true;
    public void setGroupType(String newGroupType)    {        String oldGroupType = groupType;        groupType = newGroupType;        if (eNotificationRequired())            eNotify(new ENotificationImpl(this, Notification.SET, DataPackage.SERIES_GROUPING__GROUP_TYPE,                oldGroupType, groupType));    }