* @return a new {@link VersionRange} object that represents the spec
     * @throws InvalidVersionSpecificationException if invalid version specification
     */
    public static VersionRange createFromVersionSpec(String spec) throws InvalidVersionSpecificationException {
        if (spec == null) {
            return null;
        }

        VersionRange cached = CACHE_SPEC.get(spec);
        if (cached != null) {

        if (effectiveScope == null) {
            return null;
        }

        VersionRange versionRange = VersionRange.createFromVersionSpec(dependency.getVersion());

        Artifact dependencyArtifact = factory.createDependencyArtifact(
                dependency.getGroupId(),
                dependency.getArtifactId(),
                versionRange,

            return null;
        }
        if (version != null && parent.getVersion() != null && !version.equals(parent.getVersion())) {
            try {
                VersionRange parentRange = VersionRange.createFromVersionSpec(parent.getVersion());
                if (!parentRange.hasRestrictions()) {
                    // the parent version is not a range, we have version skew, drop back to resolution from repo
                    return null;