### Question:
FlowRttMetricGenBolt extends MetricGenBolt { @VisibleForTesting static long noviflowTimestamp(Long v) { long seconds = (v >> 32); long nanoseconds = (v & 0xFFFFFFFFL); return seconds * TEN_TO_NINE + nanoseconds; } FlowRttMetricGenBolt(String metricPrefix);  static final long TEN_TO_NINE; }### Answer:
@Test public void testNoviflowTimstampToLong() { long seconds = 123456789; long nanoseconds = 987654321; long timestampNovi = (seconds << 32) + nanoseconds; assertEquals(123456789_987654321L, noviflowTimestamp(timestampNovi)); }