question: public void loadDemoFiles ( ) throws IOException { File fromDir = new File ( XmlFile . xmlDir ( ) , "demoOperations" ) ; copyBackupSet ( fromDir , getOperationsRoot ( ) ) ; log . debug ( "copying file: {}" , _demoPanelFileName ) ; File src = new File ( fromDir , _demoPanelFileName ) ; File dst = new File ( getOperationsRoot ( ) , _demoPanelFileName ) ; FileHelper . copy ( src . getAbsolutePath ( ) , dst . getAbsolutePath ( ) , true ) ; }
target:  Reloads the demo Operations files that are distributed with JMRI.