class ExportOptionsModel extends Observable {

    public void setIncludeMetaColumns(boolean includeMetaColumns)
    {
        boolean changed = myIncludeMetaColumns != includeMetaColumns;

        if (changed)
        {
            myIncludeMetaColumns = includeMetaColumns;
            setChanged();
            notifyObservers(INCLUDE_META_COLUMNS_PROP);
        }
    }

}