def METHOD_NAME():
    """Returns a HTML string for the about dialog."""
    appname = appinfo.appname
    version = _("Version {version}").format(version = appinfo.version)
    description = _("A LilyPond Music Editor")
    copyright = _("Copyright (c) {year} by {author}").format(
        year = "2008-2022",
        author = """<a href="mailto:{}" title="{}">{}</a>""".format(
            appinfo.maintainer_email,
            _("Send an e-mail message to the maintainers."),
            appinfo.maintainer))
    # L10N: Translate this sentence and fill in your own name to have it appear in the About Dialog.
    translator = _("Translated by Your Name.")
    if translator == "Translated by Your Name.":
        translator = ""
    else:
        translator = f"<p>{translator}</p>"
    license = _("Licensed under the {gpl}.").format(
        gpl = """<a href="http://www.gnu.org/licenses/gpl.html">GNU GPL</a>""")
    homepage = appinfo.url
    return html_template.format(**locals())