### Question:
NetworkStretcher { @VisibleForTesting Duration getIncreasedPeriod() { Duration increasedPeriod = currentPeriod.plus(periodDelta); if (increasedPeriod.toMillis() > maxPeriod.toMillis()){ return maxPeriod; } return increasedPeriod; }  void modifyIterationTimeouts(); Duration getRestInterval(Duration elapsedTime); void modifyDecreasedPeriod();  }### Answer:
@Test public void testIncreasedPeriod() { NetworkStretcher ns = NetworkStretcher.builder().build(); assertThat(ns.getIncreasedPeriod()).isEqualTo(Duration.ofSeconds(3)); }