def METHOD_NAME(video_path, language=None, extension='.srt'):
    """Get the subtitle path using the `video_path` and `language`.
    :param str video_path: path to the video.
    :param language: language of the subtitle to put in the path.
    :type language: :class:`~babelfish.language.Language`
    :param str extension: extension of the subtitle.
    :return: path of the subtitle.
    :rtype: str
    """
    subtitle_root = os.path.splitext(video_path)[0]
    if language:
        subtitle_root += '.' + str(language)
    return subtitle_root + extension