try {
      ForwardingObjectTester.testForwardingObject(FailToForward.class);
    } catch (AssertionError | UnsupportedOperationException expected) {
      // UnsupportedOperationException is what we see on Android.
      return;
    }
    fail("Should have thrown");
  }

  @AndroidIncompatible // TODO(cpovirk): java.lang.IllegalAccessError: superclass not accessible
  public void testSuccessfulForwarding() {

	// We need to preserve the encryption headers set in EncryptRequest,
	// so we do not want to override them, copy them instead.
	maps.Copy(srcInfo.UserDefined, encMetadata)

	// Ensure that metadata does not contain sensitive information
	crypto.RemoveSensitiveEntries(srcInfo.UserDefined)

	// If we see legacy source, metadataOnly we have to overwrite the content.
	if srcInfo.Legacy {

    latch = new CountDownLatch(1);
    future = createListenableFuture(Boolean.TRUE, null, latch);
  }

  @Override
  protected void tearDown() throws Exception {

    // Make sure we have no waiting threads.
    latch.countDown();
  }

  /** Constructs a listenable future with a value available after the latch has counted down. */
  protected abstract <V> ListenableFuture<V> createListenableFuture(

    private @Nullable AvlNode<E> right;
    /*
     * pred and succ are nullable after construction, but we always call successor() to initialize
     * them immediately thereafter.
     *
     * They may be subsequently nulled out by TreeMultiset.clear(). I think that the only place that
     * we can reference a node whose fields have been cleared is inside the iterator (and presumably
     * only under concurrent modification).

     */
    public void sendNotification(WitnessEventType eventType, String resourceName) {
        // In a real implementation, this would send notifications to registered clients
        // For the mock, we just log it
        log.info("Mock sending notification: {} for resource: {}", eventType, resourceName);

        // Count how many registrations this affects
        int affectedRegistrations = 0;

			Description: "proxy url endpoint e.g. http(s)://proxy",
			Optional:    true,
			Type:        "string",
		},
		config.HelpKV{
			Key:         MaxRetry,
			Description: `maximum retry count before we start dropping logged event(s)`,
			Optional:    true,
			Type:        "number",
		},
		config.HelpKV{
			Key:         RetryInterval,
			Description: `sleep between each retries, allowed maximum value is '1m' e.g. '10s'`,

        return target.contains(t);
      } catch (NullPointerException | ClassCastException e) {
        return false;
      }
    }

    @Override
    /*
     * We should probably not have implemented equals() at all, but given that we did, we can't
     * provide a better implementation than the input Collection, at least without dramatic changes
     * like copying it to a new Set—which might then test for element equality differently.

 * directly; please see {@link com.google.common.collect.testing.MapTestSuiteBuilder}.
 *
 * @author Kevin Bourrillion
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class MapIsEmptyTester<K, V> extends AbstractMapTester<K, V> {

/**
 * Testers for {@link ListMultimap#replaceValues(Object, Iterable)}.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")

import java.lang.annotation.RetentionPolicy;
import java.util.Set;

/**
 * Optional features of classes derived from {@code Multimap}.
 *
 * @author Louis Wasserman
 */
@SuppressWarnings("rawtypes") // maybe avoidable if we rework the whole package?
@GwtCompatible
public enum MultimapFeature implements Feature<Multimap> {
  VALUE_COLLECTIONS_SUPPORT_ITERATOR_REMOVE;

  private final Set<Feature<? super Multimap>> implied;