static deadlockedThreadsToString(L<ThreadInfo> threadInfo) {
  new L<S> out;
  for (ThreadInfo threadInfo1 : threadInfo) {
    out.add("Thread " + (++i) + "/" + l(threadInfo) + ": ID=" + threadInfo1.getThreadId()
      + ", name=" + quote(threadInfo1.getThreadName()));
    out.add("  Trying to lock: " + threadInfo1.getLockName()
      + " which is owned by thread " + threadInfo1.getLockOwnerId()
      + " (" + quote(threadInfo1.getLockOwnerName()) + ")");
  }
  ret lines(out);
}