and:
        def holder1 = Mock(MemoryHolder)
        def holder2 = Mock(MemoryHolder)
        memoryManager.addMemoryHolder(holder1)
        memoryManager.addMemoryHolder(holder2)

        when:
        memoryManager.requestFreeMemory(MemoryAmount.ofGigaBytes(5).bytes)

        then:
        1 * holder1.attemptToRelease(_) >> MemoryAmount.ofGigaBytes(2).bytes

  }

  public void testGetAndAdd() {
    Count holder = new Count(20);
    assertEquals(20, holder.get());
    holder.add(1);
    assertEquals(21, holder.get());
  }

  public void testAddAndGet() {
    Count holder = new Count(20);
    assertEquals(21, holder.addAndGet(1));
  }

  public void testGetAndSet() {
    Count holder = new Count(10);
    assertEquals(10, holder.getAndSet(20));
    assertEquals(20, holder.get());

	}
}

func TestValidateLeaseSpecUpdate(t *testing.T) {
	holder := "holder"
	leaseDuration := int32(0)
	leaseTransitions := int32(-1)
	lease := &coordination.Lease{
		ObjectMeta: metav1.ObjectMeta{
			Name:      "holder",
			Namespace: "holder-namespace",
		},
		Spec: coordination.LeaseSpec{
			HolderIdentity:       &holder,
			LeaseDurationSeconds: &leaseDuration,
			LeaseTransitions:     &leaseTransitions,

3. Neither the name of the copyright holder nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
“AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

    /**
     * Register a memory resource holder.
     *
     * @param holder The memory resource holder to register
     */
    void addMemoryHolder(MemoryHolder holder);

    /**
     * Unregister a memory resource holder.
     *
     * @param holder The memory resource holder to unregister
     */
    void removeMemoryHolder(MemoryHolder holder);

    /**
     * Request an amount of free system memory.

    final Map<Path, Holder> modelByPath = new ConcurrentHashMap<>();

    final Map<GAKey, Holder> modelByGA = new ConcurrentHashMap<>();

    public static class Holder {
        private volatile boolean set;
        private volatile Model model;

        Holder() {}

        Holder(Model model) {
            this.model = Objects.requireNonNull(model);

    final Map<Path, Holder> modelByPath = new ConcurrentHashMap<>();

    final Map<GAKey, Holder> modelByGA = new ConcurrentHashMap<>();

    public static class Holder {
        private volatile boolean set;
        private volatile Model model;

        Holder() {}

        Holder(Model model) {
            this.model = Objects.requireNonNull(model);

	// for this example, this block should never run
	if _, ok := any(m).(SomeInterface); ok {
		var dst SomeInterface
		_, _ = dst.(T)
		return dst.(T)
	}

	return m
}

type holder struct{}

func main() {
	X[holder]()

    private final Queue<Holder> changeQueue = new LinkedBlockingQueue() // unprocessed changes

    private final ManagedExecutor executor
    private boolean stop = false

    private AssertionError timeoutError

    // wrapper object for the queue, to enable a null sentinel
    private class Holder {
        final value
        Holder(value) {
            this.value = value
        }
    }

        }
    }

    @Override
    public void addMemoryHolder(MemoryHolder holder) {
        synchronized (holdersLock) {
            holders.add(holder);
        }
    }

    @Override
    public void removeMemoryHolder(MemoryHolder holder) {
        synchronized (holdersLock) {
            holders.remove(holder);
        }
    }

    @Override