def METHOD_NAME(md: MarkdownIt) -> None:
    """Render ``++text++`` markup with a HTML ``<ins>`` tag."""
    md.inline.ruler.before('strikethrough', 'ins', tokenize)
    md.inline.ruler2.before('strikethrough', 'ins', post_process)
    md.add_render_rule('ins_open', ins_open)
    md.add_render_rule('ins_close', ins_close)