* @return a stream of earlier versions
     */
    @VisibleForTesting
    static Stream<QualifiedVersion> findPreviousVersion(GitWrapper gitWrapper, QualifiedVersion version) {
        final int majorSeries = version.getMinor() == 0 && version.getRevision() == 0 ? version.getMajor() - 1 : version.getMajor();
        final String tagPattern = "v" + majorSeries + ".*";

        return gitWrapper.listVersions(tagPattern)