private Throwable popLoggedThrowable() {
    List<LogRecord> logRecords = logHandler.getStoredLogRecords();
    assertEquals(1, logRecords.size());
    LogRecord logRecord = logRecords.get(0);
    logHandler.clear();
    return logRecord.getThrown();
  }

  private void checkNothingLogged() {
    assertTrue(logHandler.getStoredLogRecords().isEmpty());
  }

  private void checkLogged(Throwable t) {

  }

  private Throwable popLoggedThrowable() {
    List<LogRecord> logRecords = logHandler.getStoredLogRecords();
    assertEquals(1, logRecords.size());
    LogRecord logRecord = logRecords.get(0);
    logHandler.clear();
    return logRecord.getThrown();
  }

  private void checkNothingLogged() {
    assertThat(logHandler.getStoredLogRecords()).isEmpty();
  }

  private void checkLoggedCause(Throwable t) {