and:
        container.findByName("task") != null
        container.findByName("task") == task

        and:
        container.withType(DefaultTask).named("task").isPresent()
        container.withType(DefaultTask).named("task").get() == task

        and:
        1 * taskFactory.create(_ as TaskIdentity) >> task
        1 * action.execute(_) >> { throw new RuntimeException("Failing creation rule") }

)

// ReceiverNamed returns the named type (if any) associated with the
// type of recv, which may be of the form N or *N, or aliases thereof.
// It also reports whether a Pointer was present.
func ReceiverNamed(recv *types.Var) (isPtr bool, named *types.Named) {
	t := recv.Type()
	if ptr, ok := aliases.Unalias(t).(*types.Pointer); ok {
		isPtr = true
		t = ptr.Elem()
	}
	named, _ = aliases.Unalias(t).(*types.Named)
	return
}

    isCanBeConsumed = false
    extendsFrom(aggregate)
    attributes {
        attribute(Usage.USAGE_ATTRIBUTE, objects.named(Usage.JAVA_RUNTIME))
        attribute(Category.CATEGORY_ATTRIBUTE, objects.named(Category.LIBRARY))
        attribute(LibraryElements.LIBRARY_ELEMENTS_ATTRIBUTE, objects.named(LibraryElements.CLASSES))
    }
}

// A resolvable configuration to collect source code
val sourcesPath by configurations.creating {

            new TestStringSetGenerator() {
              @Override
              public Set<String> create(String[] elements) {
                return Collections.emptySet();
              }
            })
        .named("emptySet")
        .withFeatures(CollectionFeature.SERIALIZABLE, CollectionSize.ZERO)
        .suppressing(suppressForEmptySet())
        .createTestSuite();
  }

  public Test testsForSingletonSet() {

        canBeConsumed = true
        canBeResolved = false
        attributes {
            attribute(Category.CATEGORY_ATTRIBUTE, objects.named(Category, Category.LIBRARY))
            attribute(Usage.USAGE_ATTRIBUTE, objects.named(Usage, Usage.JAVA_RUNTIME))
            attribute(Bundling.BUNDLING_ATTRIBUTE, objects.named(Bundling, Bundling.EXTERNAL))
            attribute(TargetJvmVersion.TARGET_JVM_VERSION_ATTRIBUTE, JavaVersion.current().majorVersionNumber)

                        attribute(Usage.USAGE_ATTRIBUTE, objects.named(Usage, Usage.JAVA_RUNTIME))
                        attribute(Category.CATEGORY_ATTRIBUTE, objects.named(Category, Category.DOCUMENTATION))
                        attribute(Bundling.BUNDLING_ATTRIBUTE, objects.named(Bundling, Bundling.EXTERNAL))
                        attribute(DocsType.DOCS_TYPE_ATTRIBUTE, objects.named(DocsType, DocsType.SOURCES))
                    }

                Map<String, String> map = populate(new HashMap<String, String>(), entries);
                return Collections.checkedMap(map, String.class, String.class);
              }
            })
        .named("checkedMap/HashMap")
        .withFeatures(
            MapFeature.GENERAL_PURPOSE,
            MapFeature.ALLOWS_NULL_KEYS,
            MapFeature.ALLOWS_NULL_VALUES,
            MapFeature.ALLOWS_ANY_NULL_QUERIES,

class ObjectFactoryExtensionsTest {

    @Test
    fun named() {

        val objectFactory = mock<ObjectFactory> {
            on { named(any<Class<Named>>(), eq("foo")) } doReturn SomeNamed("foo")
        }

        val named = objectFactory.named<SomeNamed>("foo")
        assertThat(named.name, equalTo("foo"))

        inOrder(objectFactory) {
            verify(objectFactory).named(SomeNamed::class.java, "foo")

                extendsFrom(bazar)
            }

            val cabin: NamedDomainObjectProvider<Configuration> = configurations.named("cabin")
            val castle: NamedDomainObjectProvider<Configuration> = configurations.named("castle") {
                extendsFrom(cabin.get())
            }

            val valley: NamedDomainObjectProvider<Configuration> = configurations.register("valley")

                        }
                    }
                    other {
                        outgoing {
                            artifact file('bar.txt')
                        }
                        attributes {
                            attribute(Category.CATEGORY_ATTRIBUTE, objects.named(Category, "other"))
                        }