// 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.apache.maven.api.plugin.descriptor.lifecycle.Lifecycle;
import org.apache.maven.api.xml.XmlNode;
import org.codehaus.plexus.util.xml.Xpp3Dom;
import org.eclipse.aether.graph.DependencyNode;

public class DefaultMojoExecution implements MojoExecution {
    private final InternalMavenSession session;
    private final org.apache.maven.plugin.MojoExecution delegate;

import org.eclipse.aether.artifact.DefaultArtifact;
import org.eclipse.aether.collection.CollectRequest;
import org.eclipse.aether.collection.CollectResult;
import org.eclipse.aether.graph.Dependency;
import org.eclipse.aether.graph.DependencyNode;
import org.eclipse.aether.resolution.ArtifactDescriptorRequest;
import org.eclipse.aether.resolution.ArtifactDescriptorResult;
import org.eclipse.aether.resolution.ArtifactRequest;

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

    }

    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());