private String format(double score) {
        int NUM_DECIMAL_PLACES = 3;
        return String.format("%." + NUM_DECIMAL_PLACES + "f", score);
    }
@Test
    public void durationFormatOnShortTimesWorksDoesNotIncludeMinsOrHours() {

        Duration fiveSec = Duration.ofMillis(5_123);

        assertThat(format(fiveSec), equalTo("5.123 sec"));
    }