return DEFAULT_MESSAGE + " (project: " + project.getId() + "; illegal attachment: " + artifact.getId() + ")";
    }

    public MavenProject getProject() {
        return project;
    }

    public Artifact getArtifact() {
        return artifact;
    }

        return Collections.singletonList(new DefaultArtifactVersion("10.1.3"));
    }

    @Override
    public ResolutionGroup retrieve(MetadataResolutionRequest request) {
        return retrieve(request.getArtifact(), request.getLocalRepository(), request.getRemoteRepositories());
    }

                return retrieve(request.getArtifact(), request.getLocalRepository(), request.getRemoteRepositories());
            }

            @Override
            public List<ArtifactVersion> retrieveAvailableVersions(MetadataResolutionRequest request) {
                return retrieveAvailableVersions(
                        request.getArtifact(), request.getLocalRepository(), request.getRemoteRepositories());

    public FatArtifactTraverser() {}

    @Override
    public boolean traverseDependency(Dependency dependency) {
        requireNonNull(dependency, "dependency cannot be null");
        String prop = dependency.getArtifact().getProperty(MavenArtifactProperties.INCLUDES_DEPENDENCIES, "");
        return !Boolean.parseBoolean(prop);
    }

    @Override
    public DependencyTraverser deriveChildTraverser(DependencyCollectionContext context) {

            Artifact pluginArtifact,
            ArtifactDescriptorResult artifactDescriptorResult) {
        Set<String> maven2Versions = artifactDescriptorResult.getDependencies().stream()
                .map(Dependency::getArtifact)
                .filter(d -> "org.apache.maven".equals(d.getGroupId()))
                .filter(d -> !DefaultPluginValidationManager.EXPECTED_PROVIDED_SCOPE_EXCLUSIONS_GA.contains(

        }
        return result;
    }

    @Override
    public LocalArtifactResult find(RepositorySystemSession session, LocalArtifactRequest request) {
        String path = getPathForLocalArtifact(request.getArtifact());
        File file = new File(getRepository().getBasedir(), path);

        LocalArtifactResult result = new LocalArtifactResult(request);
        if (file.isFile()) {
            result.setFile(file);

        }
        return result;
    }

    @Override
    public LocalArtifactResult find(RepositorySystemSession session, LocalArtifactRequest request) {
        String path = getPathForLocalArtifact(request.getArtifact());
        File file = new File(getRepository().getBasedir(), path);

        LocalArtifactResult result = new LocalArtifactResult(request);
        if (file.isFile()) {
            result.setFile(file);

        MavenSession session = createMavenSession(pom, eps);
        MavenProject project = session.getCurrentProject();

        project.setArtifacts(resolver.resolve(project, Collections.singleton(Artifact.SCOPE_COMPILE), session));

        List<String> elements = project.getCompileClasspathElements();
        assertEquals(2, elements.size());

                this.timestamp = pomFile.lastModified();
            } else {
                this.length = -1;
                this.timestamp = -1;
            }
        }

        public Artifact getArtifact() {
            return pomArtifact;
        }

        public Artifact getRelocatedArtifact() {
            return relocatedArtifact;
        }

        public List<Artifact> getArtifacts() {

        Artifact depArtifact = createArtifact("group", "artifact", "1");

        List<Artifact> deps = new ArrayList<>();
        deps.add(depArtifact);

        exec.getMojoDescriptor().getPluginDescriptor().setArtifacts(deps);

        MavenSession session = newMavenSession();

        @SuppressWarnings("unchecked")
        List<Artifact> depResults =