final Version latestInMajor = getLatestVersionByKey(groupByMajor, version.getMajor());
                if (latestInMajor.getMinor() == version.getMinor()) {
                    return version.getMajor() + ".x";
                } else {
                    return version.getMajor() + "." + version.getMinor();
                }
            case ":distribution:bwc:staged":
            case ":distribution:bwc:maintenance":

        QualifiedVersion v = QualifiedVersion.of(currentVersion);
        Set<QualifiedVersion> versions = gitWrapper.listVersions("v" + v.getMajor() + '.' + v.getMinor() + ".*").collect(toSet());
        versions.add(v);
        return versions;
    }

    /**
     * Group a set of files by the version in which they first appeared, up until the supplied version. Any files not