import org.gradle.internal.component.model.VariantGraphResolveState;

import java.util.List;
import java.util.Set;

class RootNode extends NodeState implements RootGraphNode {
    private final ResolveOptimizations resolveOptimizations;
    private final List<? extends DependencyMetadata> syntheticDependencies;

        DependencyGraphComponent component = Mock()
        ComponentIdentifier identifier = Mock()

        when:
        visitor.visitNode(rootNode)

        then:
        2 * rootNode.owner >> component
        1 * rootNode.root >> true
        1 * component.componentId >> identifier
        1 * component.metadataOrNull >> null

        and:
        visitor.allResolvedModules.empty
    }

        return ModelProblemUtils.toId(sourceModel);
    }

    public void setRootModel(Model rootModel) {
        this.rootModel = rootModel;
    }

    public Model getRootModel() {
        return rootModel;
    }

    public String getRootModelId() {
        return ModelProblemUtils.toId(rootModel);
    }

    @Override
    public void add(ModelProblem problem) {
        problems.add(problem);

func defaultGODEBUG(p *Package, directives, testDirectives, xtestDirectives []build.Directive) string {
	if p.Name != "main" {
		return ""
	}
	goVersion := modload.MainModules.GoVersion()
	if modload.RootMode == modload.NoRoot && p.Module != nil {
		// This is go install pkg@version or go run pkg@version.
		// Use the Go version from the package.
		// If there isn't one, then assume Go 1.20,

	modload.InitWorkfile()

	if len(args) != 0 {
		// NOTE(rsc): Could take a module pattern.
		base.Fatalf("go: verify takes no arguments")
	}
	modload.ForceUseModules = true
	modload.RootMode = modload.NeedRoot

	// Only verify up to GOMAXPROCS zips at once.
	type token struct{}
	sem := make(chan token, runtime.GOMAXPROCS(0))

	mg, err := modload.LoadModGraph(ctx, "")
	if err != nil {

	// that are in 'all' but outside of the main module, we must explicitly
	// request that their test dependencies be included.
	modload.ForceUseModules = true
	modload.RootMode = modload.NeedRoot

	goVersion := tidyGo.String()
	if goVersion != "" && gover.Compare(gover.Local(), goVersion) < 0 {
		toolchain.SwitchOrFatal(ctx, &gover.TooNewError{
			What:      "-go flag",