private static void processFiles(File folder, List<String> out) {
        for (File f : folder.listFiles()) {
            if (f.isDirectory()) {
                processFiles(folder, out);
            } else if (!f.getName().equals(importFile)) {
                out.add("npc: " + f.getPath().substring(_baseFolder.getPath().length() + 1));
            }
        }
    }