@GwtIncompatible // reflection
  public void testNulls() throws Exception {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(ImmutableMultimap.class);
    tester.ignore(ImmutableListMultimap.class.getMethod("get", Object.class));
    tester.testAllPublicInstanceMethods(ImmutableMultimap.of());
    tester.testAllPublicInstanceMethods(ImmutableMultimap.of("a", 1));
  }

    return !disjoint(a, b);
  }

  private static Method extractMethod(Test test) {
    if (test instanceof AbstractTester) {
      AbstractTester<?> tester = (AbstractTester<?>) test;
      return Helpers.getMethod(tester.getClass(), tester.getTestMethodName());
    } else if (test instanceof TestCase) {
      TestCase testCase = (TestCase) test;
      return Helpers.getMethod(testCase.getClass(), testCase.getName());
    } else {

    private final transient ClassSanityTester tester;

    SerializableDummyProxy(ClassSanityTester tester) {
      this.tester = tester;
    }

    @Override
    <R> R dummyReturnValue(TypeToken<R> returnType) {
      return tester.getDummyValue(returnType);
    }

    @Override
    public boolean equals(@Nullable Object obj) {

    NullPointerTester tester = new NullPointerTester();
    // Necessary until JDK15:
    // https://bugs.openjdk.org/browse/JDK-8202469
    tester.ignore(Equivalence.class.getMethod("wrap", Object.class));

    tester.testAllPublicStaticMethods(Equivalence.class);
    tester.testAllPublicInstanceMethods(Equivalence.equals());
    tester.testAllPublicInstanceMethods(Equivalence.identity());
  }

        [
            [group:'org', name: 'testA', version: '3', attributes: ['org.gradle.status': 'release', 'custom': 'foo']],
            [group:'org', name: 'testA', version: '2', attributes: ['org.gradle.status': 'integration', 'custom': 'bar']],
            [group:'org', name: 'testA', version: '1', attributes: ['org.gradle.status': 'release', 'custom': 'bar']],

    assertThrows(NullPointerException.class, () -> Atomics.newReferenceArray(null));
  }

  public void testNullPointers() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicConstructors(Atomics.class); // there aren't any
    tester.testAllPublicStaticMethods(Atomics.class);
  }

            it.plugins.apply(JavaPlugin)
        }

        child1.configurations.create("testArtifacts")
        def task = child1.tasks.create("testJar", Jar) {
            archiveClassifier.set("tests")
            from(project.sourceSets.test.output)
        }
        child1.artifacts.add("testArtifacts", task)
        child2.dependencies {
            implementation child2.dependencies.project(path: ":child1")

            'org:testA:1.0' {
                variant('runtime') {
                    capability('org', 'testA', '1.0')
                    capability('cap')
                }
            }
            'org:testB:1.0' {
                variant('runtime') {
                    capability('org', 'testB', '1.0')
                    capability('cap')
                }
            }
        }

        List<XCTestCaseElement> testCases = [
            passingTestCase("testA"),
            passingTestCase("testB")
        ]
    }

    final XCTestSourceFileElement alternateFooTestSuite = new XCTestSourceFileElement("FooTestSuite") {
        List<XCTestCaseElement> testCases = [
            passingTestCase("testA")
        ]
    }

  public void testNullPointers() {
    NullPointerTester tester = new NullPointerTester();
    tester.testAllPublicStaticMethods(Joiner.class);
    tester.testInstanceMethods(Joiner.on(","), NullPointerTester.Visibility.PACKAGE);
    tester.testInstanceMethods(Joiner.on(",").skipNulls(), NullPointerTester.Visibility.PACKAGE);
    tester.testInstanceMethods(