if (selectedNode instanceof JSimMutuableTreeNode) {
if(selectedNode.isLeaf()){
selectedNode = (DefaultMutableTreeNode)selectedNode.getParent();
}
((JSimMutuableTreeNode) selectedNode).createNodes(true);
model.nodeStructureChanged(selectedNode);
}
} else if (es == killBackupFiles) {
for (TreePath treePath : selectedNodes) {
DefaultMutableTreeNode node = (DefaultMutableTreeNode) treePath
.getLastPathComponent();