### Question:
GangAntiDeadlockLlamaAM extends LlamaAMImpl implements
    LlamaAMListener, Runnable { @Override public List<PlacedReservation> releaseReservationsForHandle(UUID handle, boolean doNotCache) throws LlamaException { List<PlacedReservation> reservations = am.releaseReservationsForHandle(handle, doNotCache); List<PlacedReservation> localReservations = gReleaseReservationsForHandle(handle); localReservations.removeAll(reservations); if (!localReservations.isEmpty()) { dispatch(LlamaAMEventImpl.createEvent(isCallProducingEchoEvent(handle), localReservations)); } reservations = new ArrayList<PlacedReservation>(reservations); reservations.addAll(localReservations); return reservations; } GangAntiDeadlockLlamaAM(Configuration conf, LlamaAM llamaAM); @Override void setMetricRegistry(MetricRegistry metricRegistry); @Override void start(); @Override void stop(); @Override boolean isRunning(); @Override List<NodeInfo> getNodes(); @Override void reserve(UUID reservationId, Reservation reservation); @Override PlacedReservation getReservation(UUID reservationId); @Override PlacedReservation releaseReservation(UUID handle, UUID reservationId,
      boolean doNotCache); @Override List<PlacedReservation> releaseReservationsForHandle(UUID handle,
      boolean doNotCache); List<PlacedReservation> releaseReservationsForQueue(
      String queue, boolean doNotCache); @Override void emptyCacheForQueue(String queue); @Override void addListener(LlamaAMListener listener); @Override void removeListener(LlamaAMListener listener); @Override synchronized void onEvent(LlamaAMEvent event); @Override void run(); static final List<String> METRIC_KEYS; }### Answer:
@Test @SuppressWarnings("unchecked") public void testReleaseReservationsForHandle() throws Exception { Configuration conf = createGangConfig(); MyLlamaAM am = new MyLlamaAM(conf); GangAntiDeadlockLlamaAM gAm = new MyGangAntiDeadlockLlamaAM(conf, am); try { gAm.start(); UUID handle = UUID.randomUUID(); Reservation reservation1 = TestUtils.createReservation(handle, 1, true); gAm.reserve(reservation1); Reservation reservation2 = TestUtils.createReservation(handle, 1, true); gAm.reserve(reservation2); Reservation reservation3 = TestUtils.createReservation(handle, 1, true); gAm.reserve(reservation3); Reservation reservation4 = TestUtils.createReservation(handle, 1, true); gAm.reserve(reservation4); LlamaAMEventImpl event1 = new LlamaAMEventImpl(); gAm.timeOfLastAllocation = System.currentTimeMillis() - NO_ALLOCATION_LIMIT - 1; long sleep = gAm.deadlockAvoidance(event1); Assert.assertEquals(NO_ALLOCATION_LIMIT, sleep); Assert.assertEquals(2, am.reservations.size()); Assert.assertEquals(4, gAm.localReservations.size()); Assert.assertEquals(2, gAm.backedOffReservations.size()); Assert.assertEquals(2, gAm.submittedReservations.size()); List<PlacedReservation> prs = gAm.releaseReservationsForHandle(handle, false); Assert.assertEquals(4, prs.size()); for (PlacedReservation pr : prs) { Assert.assertEquals(PlacedReservation.Status.RELEASED, pr.getStatus()); } } finally { gAm.stop(); } }