@Override
protected void addChildren() throws OpsException {
addChild(ManagedDirectory.build(BASE_DIR, "0644"));
addChild(SimpleFile.build(getClass(), new File("/etc/network/if-pre-up.d/iptables-lockdown"))
.setFileMode("755").setUpdateAction(new FilesystemAction() {
@Override
public void execute(OpsTarget target, ManagedFilesystemItem managedFilesystemItem)
throws OpsException {
if (managedFilesystemItem.getNewFileWasCreated()) {