code: public static void link(File src, File dst) throws IOException {
      if (src == null || dst == null) {
        throw new IllegalArgumentException("Null parameter passed");
      }
      if (isAvailable()) {
        link(src.getAbsolutePath(), dst.getAbsolutePath());
      } else {
        HardLink.createHardLink(src, dst);
      }
    }
docs: Wrapper around native link()