return new AsyncFunction<I, O>() {
      @Override
      public ListenableFuture<O> apply(I input) {
        return output;
      }
    };
  }

  @J2ktIncompatible // Wildcard generics
  public void testTransformAsync_genericsWildcard_AsyncFunction() throws Exception {
    ListenableFuture<?> nullFuture = immediateFuture(null);
    ListenableFuture<?> chainedFuture =

			expectedClusters:     []string{"BlackHoleCluster", "InboundPassthroughCluster", "PassthroughCluster", "outbound|8080||test.com"},
		},
		{
			name:     "destination rule with wildcard matching hosts",
			services: []*model.Service{testService1},
			configs: []config.Config{{
				Meta: config.Meta{
					GroupVersionKind: gvk.DestinationRule,
					Name:             "test-desinationrule",

	if err != nil {
		t.Fatalf("failed to parse certificate: %s", err)
	}

	if err := c.VerifyHostname("label"); err == nil {
		t.Fatalf("VerifyHostname unexpected success with bare wildcard SAN")
	}