// clear the calculated artifactMap
        artifactMap = null;
    }

    public DependencyNode getDependencyNode() {
        return dependencyNode;
    }

    public void setDependencyNode(DependencyNode dependencyNode) {
        this.dependencyNode = dependencyNode;
    }

    /**
     * The map of artifacts accessible by the versionlessKey, i.e. groupId:artifactId
     *

import org.eclipse.aether.collection.CollectRequest;
import org.eclipse.aether.collection.DependencyCollectionException;
import org.eclipse.aether.graph.DependencyFilter;
import org.eclipse.aether.graph.DependencyNode;
import org.eclipse.aether.repository.RemoteRepository;
import org.eclipse.aether.resolution.ArtifactDescriptorException;
import org.eclipse.aether.resolution.ArtifactDescriptorRequest;

    }

    public static void toArtifacts(
            Collection<org.apache.maven.artifact.Artifact> artifacts,
            Collection<? extends DependencyNode> nodes,
            List<String> trail,
            DependencyFilter filter) {
        for (DependencyNode node : nodes) {
            org.apache.maven.artifact.Artifact artifact = toArtifact(node.getDependency());

                ListIterator<DependencyNode> iter = collectStepTrace
                        .getPath()
                        .listIterator(collectStepTrace.getPath().size());
                while (iter.hasPrevious()) {
                    DependencyNode curr = iter.previous();
                    indent.append("  ");

                String key = ArtifactUtils.key(artifact);
                keys.add(key);
            }
        }

        @Override
        public boolean accept(DependencyNode node, List<DependencyNode> parents) {
            Dependency dependency = node.getDependency();
            if (dependency != null) {
                org.eclipse.aether.artifact.Artifact a = dependency.getArtifact();