import org.apache.maven.api.xml.XmlNode;
import org.codehaus.plexus.util.xml.Xpp3Dom;

/**
 * A node iterator for JXPath to support <code>Xpp3Dom</code>.
 *
 */
class Xpp3DomNodeIterator implements NodeIterator {

    private NodePointer parent;

    private NodeTest test;

    private XmlNode node;

    private List<XmlNode> children;

    private List<XmlNode> filteredChildren = new ArrayList<>();

    void omitForCycle(Artifact artifact);

    /**
     * This event means that the artifactScope has NOT been updated to a farther node artifactScope because current
     * node is in the first level pom
     *
     * @param artifact     current node artifact, the one in the first level pom
     * @param ignoredScope artifactScope that was ignored because artifact was in first level pom
     */

	memTotalMD     = NewGaugeMD(memTotal, "Total memory on the node")
	memUsedMD      = NewGaugeMD(memUsed, "Used memory on the node")
	memUsedPercMD  = NewGaugeMD(memUsedPerc, "Used memory percentage on the node")
	memFreeMD      = NewGaugeMD(memFree, "Free memory on the node")
	memBuffersMD   = NewGaugeMD(memBuffers, "Buffers memory on the node")
	memCacheMD     = NewGaugeMD(memCache, "Cache memory on the node")

        this();
        this.metadata = metadata;
    }

    public MetadataGraphNode addIncident(MetadataGraphNode node) {
        inNodes.add(node);
        return this;
    }

    public MetadataGraphNode addExident(MetadataGraphNode node) {
        exNodes.add(node);
        return this;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) {

type lazyInit struct {
	done uint32
	m    sync.Mutex
}

func (l *lazyInit) Do(f func() error) error {
	if atomic.LoadUint32(&l.done) == 0 {
		return l.doSlow(f)
	}
	return nil
}

func (l *lazyInit) doSlow(f func() error) error {
	l.m.Lock()
	defer l.m.Unlock()
	if atomic.LoadUint32(&l.done) == 0 {
		if err := f(); err != nil {
			return err
		}

    }

    public static def leftShift(Node parent, Closure cl) {
        DomBuilder builder = new DomBuilder(parent)
        cl.delegate = builder
        cl.call()
        return builder.elements[0]
    }

    public static void leftShift(Node parent, Node node) {
        parent.appendChild(parent.ownerDocument.importNode(node, true))
    }

    public static void addFirst(Node parent, Closure cl) {

	ctx, cancel := context.WithCancel(context.Background())
	go func() {
		select {
		case <-ctx1.Done():
		case <-ctx2.Done():
		// The lock acquirer decides to cancel, exit this goroutine
		case <-ctx.Done():
		}

		cancel()
	}()
	return ctx, cancel
}

func (ld sharedLock) GetLock(ctx context.Context) (context.Context, context.CancelFunc) {

	nodes := endpoints.GetNodes()
	peers = make([]peerS3Client, len(nodes))
	for i, node := range nodes {
		if node.IsLocal {
			peers[i] = &localPeerS3Client{node: node}
		} else {
			peers[i] = newPeerS3Client(node)
		}
		peers[i].SetPools(node.Pools)
	}

	return peers
}

// Returns a peer S3 client.
func newPeerS3Client(node Node) peerS3Client {
	var gridConn atomic.Pointer[grid.Connection]

                        Mockito.any(PathScope.class)))
                .thenReturn(resolverResult);
        Node node = Mockito.mock(Node.class);
        Mockito.when(resolverResult.getRoot()).thenReturn(node);
        Node child = Mockito.mock(Node.class);
        Mockito.when(node.getChildren()).thenReturn(List.of(child));

        services.addAll(List.of(
                new DefaultRequestCacheFactory(),

        this();

        this.entry = entry;
    }

    public MetadataGraph() {
        nodes = new ArrayList<>(64);
    }

    public void addNode(MetadataGraphNode node) {
        nodes.add(node);
    }

    /**
     * find a node by the GAV (metadata)
     *
     * @param md
     */
    public MetadataGraphNode findNode(MavenArtifactMetadata md) {
        for (MetadataGraphNode mgn : nodes) {