if (dependency.isOptional()) {
            stringBuilder.append("[optional]");
        }
        if (!dependency.getExclusions().isEmpty()) {
            stringBuilder.append("[").append(dependency.getExclusions().size()).append(" exclusions]");
        }
        return stringBuilder.toString();
    }

    private boolean equals(Dependency d1, Dependency d2) {

        if (dependency.isOptional()) {
            stringBuilder.append("[optional]");
        }
        if (!dependency.getExclusions().isEmpty()) {
            stringBuilder.append("[").append(dependency.getExclusions().size()).append(" exclusions]");
        }
        return stringBuilder.toString();
    }

    private boolean equals(Dependency d1, Dependency d2) {

                return dependency.isOptional();
            }

            @Nonnull
            @Override
            public Collection<Exclusion> getExclusions() {
                return new MappedCollection<>(dependency.getExclusions(), this::toExclusion);
            }

            private Exclusion toExclusion(org.apache.maven.api.model.Exclusion exclusion) {
                return new Exclusion() {

 */
public interface DependencyGraphEdge extends ResolvedGraphDependency {
    DependencyGraphNode getFrom();

    DependencyGraphSelector getSelector();

    boolean isTransitive();

    ExcludeSpec getExclusions();

    boolean contributesArtifacts();

    DependencyMetadata getDependencyMetadata();

    ImmutableAttributes getAttributes();

    /**

        if (!dependency.getDependencyMetadata().getArtifacts().isEmpty() ||
            !dependency.getAttributes().isEmpty() ||
            dependency.getExclusions().mayExcludeArtifacts()
        ) {
            int id = nextId++;

        this.overriddenAttributes = dependency.getAttributes();
        this.artifacts = dependency.getDependencyMetadata().getArtifacts();
        this.exclusions = dependency.getExclusions();
        this.capabilities = dependency.getSelector().getRequested().getRequestedCapabilities();
        this.graphVariantSelector = graphVariantSelector;
        this.consumerSchema = consumerSchema;
    }

                String key = artifact.getDependencyConflictId();
                Dependency dependency = dependencies.get(key);
                Collection<Exclusion> exclusions = dependency != null ? dependency.getExclusions() : null;
                org.eclipse.aether.graph.Dependency dep = RepositoryUtils.toDependency(artifact, exclusions);
                if (!DependencyScope.SYSTEM.is(dep.getScope())