public static void addThreadStartTimeMetric(final String threadId,
                                                final StreamsMetricsImpl streamsMetrics,
                                                final long startTime) {
        streamsMetrics.addThreadLevelImmutableMetric(
            THREAD_START_TIME,
            THREAD_START_TIME_DESCRIPTION,
            threadId,
            startTime
        );
    }
@Test
    public void shouldAddThreadStartTimeMetric() {
        // Given:
        final long startTime = 123L;

        // When:
        ThreadMetrics.addThreadStartTimeMetric(
            "bongo",
            streamsMetrics,
            startTime
        );

        // Then:
        verify(streamsMetrics).addThreadLevelImmutableMetric(
            "thread-start-time",
            "The time that the thread was started",
            "bongo",
            startTime
        );
    }