}

    public void testGetUnreleased() {
        assertVersionsEquals(asList("6.4.2", "6.5.0", "7.0.0-alpha1"), getVersionCollection("7.0.0-alpha1").getUnreleased());
        assertVersionsEquals(asList("5.6.13", "6.4.2", "6.5.0"), getVersionCollection("6.5.0").getUnreleased());

        ComparableVersion lower = new ComparableVersion("1.0.0-alpha1");
        ComparableVersion upper = new ComparableVersion("1.0.0-ALPHA1");
        // Lower case is equal to upper case. This is *NOT* what Semver 1.0
        // specifies. Here we are explicitly deviating from Semver 1.0.
        assertTrue(upper.compareTo(lower) == 0, "expected 1.0.0-ALPHA1 == 1.0.0-alpha1");

     */
    @VisibleForTesting
    static boolean needsGitTags(String versionString) {
        if (versionString.endsWith(".0") || versionString.endsWith(".0-SNAPSHOT") || versionString.endsWith(".0-alpha1")) {
            return false;
        }

        return true;
    }

    @InputFiles
    public FileCollection getChangelogs() {
        return changelogs;
    }