args.add("-classpath");
        args.add(Joiner.on(File.pathSeparatorChar).join(classpath));

        if (!modulePath.isEmpty()) {
            if (moduleVersion != null) {
                args.add("--module-version");
                args.add(moduleVersion);
            }
            args.add("--module-path");
            args.add(Joiner.on(File.pathSeparatorChar).join(modulePath));
        }
    }

    public Collection<? extends ModuleVersionIdentifier> getAllVersions() {
        Collection<ComponentState> moduleVersions = module.getAllVersions();
        List<ModuleVersionIdentifier> out = Lists.newArrayListWithCapacity(moduleVersions.size());
        for (ComponentState moduleVersion : moduleVersions) {
            out.add(moduleVersion.id);
        }
        return out;
    }

    public boolean isSelected() {

        then:
        resolvedDependency.name == someGroup + ":" + someName + ":" + someVersion
        resolvedDependency.moduleGroup == someGroup
        resolvedDependency.moduleName == someName
        resolvedDependency.moduleVersion == someVersion
        resolvedDependency.configuration == someConfiguration
        resolvedDependency.moduleArtifacts.empty
        resolvedDependency.children.empty
        resolvedDependency.parents.empty
    }

        void start(RootGraphNode root) {
            this.root = root
        }

        @Override
        void visitNode(DependencyGraphNode node) {
            components.add(node.owner.moduleVersion)
        }

        @Override
        void visitEdges(DependencyGraphNode node) {
            node.outgoingEdges.each {
                if (it.failure) {