}
        }
    }

    public ModelResolver newCopy() {
        return new ProjectModelResolver(this);
    }

    public ModelSource resolveModel(String groupId, String artifactId, String version)
            throws UnresolvableModelException {
        Artifact pomArtifact = new DefaultArtifact(groupId, artifactId, "", "pom", version);

        try {

        }
    }

    private Map<String, MavenProject> getProjectMap(Collection<MavenProject> projects)
            throws DuplicateProjectException {
        Map<String, MavenProject> index = new LinkedHashMap<>();
        Map<String, List<File>> collisions = new LinkedHashMap<>();

        for (MavenProject project : projects) {

                    allArtifacts.addAll(artifacts);
                    allArtifacts.addAll(directArtifacts);

                    Map<String, Artifact> mergedArtifacts = new LinkedHashMap<>();
                    for (Artifact artifact : allArtifacts) {
                        String conflictId = artifact.getDependencyConflictId();
                        if (!mergedArtifacts.containsKey(conflictId)) {

            PluginPrefixRequest request,
            RequestTrace trace,
            String pluginGroup,
            org.eclipse.aether.metadata.Metadata metadata,
            ArtifactRepository repository) {
        if (metadata != null && metadata.getFile() != null && metadata.getFile().isFile()) {
            try {
                Map<String, ?> options = Collections.singletonMap(MetadataReader.IS_STRICT, Boolean.FALSE);

        return pluginDescriptor.getClassRealm();
    }

    public MojoDescriptor getMojoDescriptor(
            Plugin plugin, String goal, List<RemoteRepository> repositories, RepositorySystemSession session)
            throws PluginNotFoundException, PluginResolutionException, PluginDescriptorParsingException,

        return isEmpty() || incidentEdges == null || incidentEdges.isEmpty();
    }
    // ------------------------------------------------------------------------
    @Override
    public String toString() {
        if (isEmpty()) {
            return "empty";
        }
        StringBuilder sb = new StringBuilder(512);
        for (MetadataGraphVertex v : vertices) {

        dependencyArtifact.setDependencyFilter(createDependencyFilter(dependency, inheritedFilter));

        return dependencyArtifact;
    }

    private static String getEffectiveScope(String originalScope, String inheritedScope) {
        String effectiveScope = Artifact.SCOPE_RUNTIME;

        if (originalScope == null) {
            originalScope = Artifact.SCOPE_COMPILE;
        }

            Map<Object, Object> context) {
        List<String> src = source.getFilters();
        if (!src.isEmpty()) {
            List<String> tgt = target.getFilters();
            Set<String> excludes = new LinkedHashSet<>(tgt);
            List<String> merged = new ArrayList<>(tgt.size() + src.size());
            merged.addAll(tgt);
            for (String s : src) {
                if (!excludes.contains(s)) {

        return projectKeys;
    }

    private Collection<String> negate(Collection<String> scopes) {
        Collection<String> result = new HashSet<>();
        Collections.addAll(result, "system", "compile", "provided", "runtime", "test");

        for (String scope : scopes) {
            if ("compile".equals(scope)) {
                result.remove("compile");
                result.remove("system");

        }

        boolean isOutdated(String timestamp) {
            return timestamp != null && timestamp.compareTo(this.timestamp) > 0;
        }
    }

    private static class Key {

        private final String groupId;

        private final String artifactId;

        private final String classifier;

        private final String extension;

        private final String version;