@Override
 public void actionPerformed(ActionEvent e) {
   final SnapFileFilter filter =
       new SnapFileFilter(
           getVectorDataType(), new String[] {".txt", ".dat", ".csv"}, "Plain text");
   importer =
       new VectorDataNodeImporter(
           getHelpId(),
           filter,
           new DefaultVectorDataNodeReader(),
           "Import CSV file",
           "csv.io.dir");
   importer.importGeometry(SnapApp.getDefault());
 }
 @Override
 protected String getDialogTitle() {
   return importer.getDialogTitle();
 }