}
        trail = null;
    }

    /**
     * @return {@link List} < {@link String} > with artifact ids
     * @throws OverConstrainedVersionException if version specification is over constrained
     */
    public List<String> getDependencyTrail() throws OverConstrainedVersionException {
        List<Artifact> trial = getTrail();

        List<String> trail = new ArrayList<>(1);
        trail.add(result.getId());
        result.setDependencyTrail(trail);

        return result;
    }

    public static void toArtifacts(
            Collection<org.apache.maven.artifact.Artifact> artifacts,
            Collection<? extends DependencyNode> nodes,
            List<String> trail,
            DependencyFilter filter) {