.getOrDefault(artifact.getArtifactId(), Collections.emptyMap())
                .values()
                .stream()
                .map(MavenProject::getVersion)
                .collect(Collectors.collectingAndThen(Collectors.toList(), Collections::unmodifiableList));
        if (!versions.isEmpty()) {
            return versions;
        }
        return getAllProjects()

        List<String> sortedProjectLabels = graph.visitAll();

        this.sortedProjects = sortedProjectLabels.stream()
                .map(id -> projectMap.get(id))
                .collect(Collectors.collectingAndThen(Collectors.toList(), Collections::unmodifiableList));
    }

    @SuppressWarnings("checkstyle:parameternumber")
    private void addEdge(
            Map<String, MavenProject> projectMap,