protected void doStart() {
            super.doStart();
            // This will delay service listener execution at least 150 milliseconds
            Uninterruptibles.sleepUninterruptibly(150, TimeUnit.MILLISECONDS);
          }
        };
    Service a =
        new NoOpDelayedService(150) {
          @Override
          protected void doStart() {
            b.startAsync();
            super.doStart();

          protected void doStart() {
            super.doStart();
            // This will delay service listener execution at least 150 milliseconds
            Uninterruptibles.sleepUninterruptibly(150, TimeUnit.MILLISECONDS);
          }
        };
    Service a =
        new NoOpDelayedService(150) {
          @Override
          protected void doStart() {
            b.startAsync();
            super.doStart();

    assertEquals(10, (int) memoizedSupplier.get());
    // it still should only have executed once due to memoization
    assertEquals(1, countingSupplier.calls);

    Thread.sleep(150);

    assertEquals(20, (int) memoizedSupplier.get());
    // old value expired
    assertEquals(2, countingSupplier.calls);

    assertEquals(20, (int) memoizedSupplier.get());

    assertEquals(10, (int) memoizedSupplier.get());
    // it still should only have executed once due to memoization
    assertEquals(1, countingSupplier.calls);

    Thread.sleep(150);

    assertEquals(20, (int) memoizedSupplier.get());
    // old value expired
    assertEquals(2, countingSupplier.calls);

    assertEquals(20, (int) memoizedSupplier.get());