"targetRef":  "targetRef is a reference to a Kubernetes object that represents this endpoint.",

  // Label (RFC 1123) validation.
  // +optional
  optional string hostname = 3;

  // targetRef is a reference to a Kubernetes object that represents this
  // endpoint.
  // +optional
  optional k8s.io.api.core.v1.ObjectReference targetRef = 4;

  // topology contains arbitrary topology information associated with the
  // endpoint. These key/value pairs must conform with the label format.

	// fungible (e.g. multiple A values in DNS). Must pass DNS Label (RFC 1123)
	// validation.
	// +optional
	Hostname *string
	// targetRef is a reference to a Kubernetes object that represents this
	// endpoint.
	// +optional
	TargetRef *api.ObjectReference
	// deprecatedTopology is deprecated and only retained for round-trip
	// compatibility with v1beta1 Topology field.  When v1beta1 is removed, this

	"targetRef":          "targetRef is a reference to a Kubernetes object that represents this endpoint.",

  // Label (RFC 1123) validation.
  // +optional
  optional string hostname = 3;

  // targetRef is a reference to a Kubernetes object that represents this
  // endpoint.
  // +optional
  optional k8s.io.api.core.v1.ObjectReference targetRef = 4;

  // deprecatedTopology contains topology information part of the v1beta1
  // API. This field is deprecated, and will be removed when the v1beta1

  // Label (RFC 1123) validation.
  // +optional
  optional string hostname = 3;

  // targetRef is a reference to a Kubernetes object that represents this
  // endpoint.
  // +optional
  optional .k8s.io.api.core.v1.ObjectReference targetRef = 4;

  // topology contains arbitrary topology information associated with the
  // endpoint. These key/value pairs must conform with the label format.

  // Label (RFC 1123) validation.
  // +optional
  optional string hostname = 3;

  // targetRef is a reference to a Kubernetes object that represents this
  // endpoint.
  // +optional
  optional .k8s.io.api.core.v1.ObjectReference targetRef = 4;

  // deprecatedTopology contains topology information part of the v1beta1
  // API. This field is deprecated, and will be removed when the v1beta1

			Namespace: service.Namespace,
			Labels: map[string]string{
				discoveryv1.LabelServiceName: service.Name,
			},
		},
		Endpoints: []discoveryv1.Endpoint{{
			Addresses: []string{pod.Status.PodIP},
			TargetRef: &v1.ObjectReference{
				Kind:      "Pod",
				Namespace: pod.Namespace,
				Name:      pod.Name,
			},
		}},
		Ports: []discoveryv1.EndpointPort{{Name: ptr.Of("http"), Port: ptr.Of(int32(80))}},
	}

     */
    void architecture(String name);

    /**
     * The operating system being targeted.
     * Defaults to the default operating system targeted by the tool chain (normally the current operating system).
     */
    @Nested
    OperatingSystem getOperatingSystem();

    /**
     * Sets the operating system being targeted.
     * <p>

        rules.withModule("group:module") { }

        then:
        e = thrown(InvalidUserCodeException)
        e.message == "bad targeted closure"

        and:
        1 * adapter.createFromClosure(ComponentSelection, _) >> { throw new InvalidUserCodeException("bad targeted closure") }
    }

    def "propagates error creating rule for rule source" () {
        when:
        rules.all ruleSource