code: static String getFormattedTimestamp() {
          DateFormat df = dateFormatPool.getAndSet(null);
          if (df == null) {
              df = createISODateFormat();
          }
          String timestamp = df.format(new Date());
          dateFormatPool.set(df);
          return timestamp;
      }
docs: Get a ISO 8601 formatted timestamp of now.
  
  @return The time stamp.