protected boolean setWorkDir(Module module) {
   final ReSTService service = ReSTService.getInstance(module);
   String workDir = service.getWorkdir();
   if (workDir.isEmpty()) {
     AskForWorkDir dialog = new AskForWorkDir(module.getProject());
     dialog.show();
     if (!dialog.isOK()) return false;
     service.setWorkdir(dialog.getInputFile());
   }
   return true;
 }