def METHOD_NAME():
    for fmt in JUPYTEXT_FORMATS:
        if fmt.format_name == "myst" and not is_myst_available():
            continue
        if fmt.format_name == "pandoc" and not is_pandoc_available():
            continue
        if fmt.format_name not in ["sphinx", "nomarker", "spin", "quarto"]:
            yield f"{fmt.extension[1:]}:{fmt.format_name}"