docs: public static String getThreadId() {
          // return Integer.toHexString(Thread.currentThread().hashCode());
  
          if (useJULThreadId) {
              // create a dummy LogRecord
              LogRecord logRecord = new LogRecord(Level.FINE, "x");
  
              return getThreadId(logRecord);
          } else {
              return threadIdToString(getIntThreadId());
          }
      }