def result = checkInService.checkIn(pluginMetadata, serviceFactory)
                    if (result.unsupportedMessage == null) {
                        println "${propertyPrefix}.checkIn.supported"
                        settings.gradle.extensions.add("serviceRef", result.pluginServiceRef)
                    } else {
                        println "${propertyPrefix}.checkIn.unsupported.reasonMessage = \$result.unsupportedMessage"

        applyPlugin()

        when:
        succeeds "t", "-D${UNSUPPORTED_TOGGLE}=true"

        then:
        plugin.assertUnsupportedMessage(output, UNSUPPORTED_TOGGLE_MESSAGE)
    }

    def "checkin happens once for build with buildSrc"() {
        given:
        applyPlugin()
        file("buildSrc/src/main/groovy/Thing.groovy") << "class Thing {}"

        when:
        succeeds "t"

        then:

     *
     * @param pluginMetadata any information provided by the plugin to Gradle
     * @param serviceFactory a factory for a per-build-invocation service for the plugin
     */
    GradleEnterprisePluginCheckInResult checkIn(
        GradleEnterprisePluginMetadata pluginMetadata,
        GradleEnterprisePluginServiceFactory serviceFactory
    );

    private static final String DISABLE_TEST_ACCELERATION_PROPERTY = "gradle.internal.testacceleration.disableImplicitApplication";

    @Override
    public GradleEnterprisePluginCheckInResult checkIn(GradleEnterprisePluginMetadata pluginMetadata, GradleEnterprisePluginServiceFactory serviceFactory) {
        if (Boolean.getBoolean(UNSUPPORTED_TOGGLE)) {
            return checkInUnsupportedResult(UNSUPPORTED_TOGGLE_MESSAGE);

	// start with a clean slate (check.Files may be called multiple times)
	check.files = nil
	check.imports = nil
	check.dotImportMap = nil

	check.firstErr = nil
	check.methods = nil
	check.untyped = nil
	check.delayed = nil
	check.objPath = nil
	check.cleaners = nil

	// determine package name and collect valid files
	pkg := check.pkg
	for _, file := range files {

func (check *Checker) pop() Object {
	i := len(check.objPath) - 1
	obj := check.objPath[i]
	check.objPath[i] = nil
	check.objPath = check.objPath[:i]
	return obj
}

type cleaner interface {
	cleanup()
}

// needsCleanup records objects/types that implement the cleanup method
// which will be called at the end of type-checking.
func (check *Checker) needsCleanup(c cleaner) {

	containerRuntime := utilruntime.NewContainerRuntime(nodeReg.CRISocket)
	if err := containerRuntime.Connect(); err != nil {
		klog.Warningf("[preflight] WARNING: Couldn't create the interface used for talking to the container runtime: %v\n", err)
	} else {
		checks = append(checks, ContainerRuntimeCheck{runtime: containerRuntime})
	}

	// non-windows checks
	checks = addSwapCheck(checks)

	for _, g := range leaked {
		errString.WriteString(fmt.Sprintf("Leaked goroutine: %v\n", g.stack))
	}
	return errors.New(errString.String())
}

// Check adds a check to a test to ensure there are no leaked goroutines
// To use, simply call leak.Check(t) at the start of a test; Do not call it in defer.
// It is recommended to call this as the first step, as Cleanup is called in LIFO order; this ensures any

// Package types2 declares the data types and implements
// the algorithms for type-checking of Go packages. Use
// Config.Check to invoke the type checker for a package.
// Alternatively, create a new type checker with NewChecker
// and invoke it incrementally by calling Checker.Files.
//
// Type-checking consists of several interdependent phases:
//

}

// newNamed is like NewNamed but with a *Checker receiver.
func (check *Checker) newNamed(obj *TypeName, underlying Type, methods []*Func) *Named {
	typ := &Named{check: check, obj: obj, fromRHS: underlying, underlying: underlying, methods: methods}
	if obj.typ == nil {
		obj.typ = typ
	}
	// Ensure that typ is always sanity-checked.
	if check != nil {
		check.needsCleanup(typ)
	}
	return typ
}