docs: public synchronized static void freeNamedLock(String name) {
          int count = namedLockUseCounts.get(name);
          if (count > 1) {
              namedLockUseCounts.put(name, count - 1);
          } else {
              namedLocks.remove(name);
              namedLockUseCounts.remove(name);
          }
      }