'Get the list of supported versions
:returns: List of version strings.'

def supported_versions(self):

    if ((not self.num_major) or (not self.num_minor) or (not self.num_point)):
        return []
    version_identifiers = self.versions.values_list('verbose_name', flat=True)
    return version_windows(version_identifiers, major=self.num_major, minor=self.num_minor, point=self.num_point)
