for (ContinuousOperation child : children) {
            result += child.getElapsedTime();
        }
        return result;
    }

    @Override
    public String getDescription() {
        return description;
    }

    public ContinuousOperation start(long start) {
        ContinuousOperation child = new ContinuousOperation("<child>");
        child.setStart(start);
        children.add(child);

        given:
        settingsFile << "include 'child'"
        file('child/build.gradle') << javaProjectUsingCheckstyle()
        file('child/src/main/java/Dummy.java') << javaClassWithNewLineAtEnd()
        file('child/config/checkstyle/checkstyle.xml') << simpleCheckStyleConfig()

        expect:
        fails(':child:checkstyleMain')
        checkStyleReportFile(file('child')).assertDoesNotExist()
    }

        variantDef.attributes.attribute(Attribute.of("thing", String), "value")
        variantDef.artifacts.add(artifact)

        expect:
        def variants = getOutgoingVariants(publications)
        variants.size() == 1

        def child = variants.first()
        child.displayName.displayName == '<config> variant child'

			field.Required(field.NewPath("spec").Child("rules").Index(0).Child("subjects").Index(0).Child("serviceAccount"), "serviceAccount is required when subject kind is 'ServiceAccount'"),
			field.Forbidden(field.NewPath("spec").Child("rules").Index(0).Child("subjects").Index(0).Child("user"), "user is forbidden when subject kind is not 'User'"),

	}

	// Now make sure children cleanup occurred after cleanup for this test.
	for _, child := range tst.children {
		if child.cleanupEnd.After(tst.cleanupStart) {
			return fmt.Errorf("child %s cleanupEnd (%v) occurred after parent %s cleanupStart (%v)",
				child.name, child.cleanupEnd, tst.name, tst.cleanupStart)
		}
	}

	if !tst.runChildrenParallel {

        // child tasks (one public, one private)
        def task1OfChild1 = child.tasks.create('t2', DefaultTask)
        task1OfChild1.group = 'build'
        task1OfChild1.description = 'T2 from child'

        def task2OfChild1 = child.tasks.create('t3', DefaultTask)
        task2OfChild1.group = null
        task2OfChild1.description = 'T3 from child'

        // grand child tasks (one public, one private)

				allErrs = append(allErrs, field.Required(fldPath.Child("items").Child("properties").Key(k).Child("default"), "this property is in x-kubernetes-list-map-keys, so it must have a default or be a required property"))
			}

			if obj.Nullable {
				allErrs = append(allErrs, field.Forbidden(fldPath.Child("items").Child("properties").Key(k).Child("nullable"), "this property is in x-kubernetes-list-map-keys, so it cannot be nullable"))

        def child = path.child(name)

        expect:
        child.parent == path
        child.name == name
        child.size() == 2
        child.toString() == "parent.${name}" as String

        where:
        name       | _
        "."        | _
        "..."      | _
        "file.txt" | _
    }

    def "is direct child"() {
        expect:

            <stringParam>CHILD-1</stringParam>
            <stringParam>CHILD-3</stringParam>
            <stringParam>CHILD-2</stringParam>
            <stringParam>CHILD-4</stringParam>
          </stringParams>
          <listParam combine.children="append">
            <!-- NOTE: These values are deliberately not in alpha order! -->
            <listParam>CHILD-1</listParam>
            <listParam>CHILD-3</listParam>

	// between the call to os.Pipe and the call to r.Close, that child process can
	// retain an open copy of r's file descriptor until it execs. If one of our
	// Write calls occurs during that interval it can spuriously succeed,
	// buffering the write to the child's copy of the pipe (even though the child
	// will not actually read the buffered bytes).

	r, w, err := os.Pipe()
	if err != nil {