### Question:
Utils { public static String getThreadId() { Instant now = Instant.now(); long nano = now.getNano(); long remainder = nano - (nano / 1000 * 1000); if (remainder == 0) { int rndNano = random.nextInt(1000); nano = nano + rndNano; } return now.getEpochSecond() + "-" + nano; }  static String timestampToDate(long seconds, int nanos); static String timestampToTime(long seconds, int nanos); static String applicationMessageIdToString(ApplicationMessageID transactionId); static String transactionIdToString(TransactionId transactionId); static Credit creditFromCreditBPM(CreditBPM creditBPM, String threadId); static CreditBPM creditBPMFromCredit(Credit credit); static Settlement settlementFromSettleProposeBPM(SettleProposeBPM settleProposeBPM, String threadId); static ApplicationMessageID applicationMessageIdFromString(String appMessageId); static String getThreadId(); static Money moneyFromSettlement(Settlement settlement); static ResponseEntity<SettlementRest> serverError();  }### Answer:
@Test public void testGetThreadId() { String threadId = Utils.getThreadId(); assertNotNull(threadId); }