protected function _getVersionType($version)
    {
        if (strtolower($version) == 'latest') {
            return 'latest';
        }

        $parts = explode('.', $version);
        $count = count($parts);
        if (1 == $count) {
            return 'major';
        }
        if (2 == $count) {
            return 'minor';
        }
        if (3 < $count) {
            throw new Zend_Loader_Exception('Invalid version string provided');
        }
        return 'specific';
    }