def METHOD_NAME():
    global _DEFAULT_FONT_PROPERTIES
    if _DEFAULT_FONT_PROPERTIES is None:
        import importlib.resources as importlib_resources
        _yt_style = mpl.rc_params_from_file(
            importlib_resources.files("yt") / "default.mplstyle",
            use_default_template=False,
        )
        _DEFAULT_FONT_PROPERTIES = {
            "family": _yt_style["font.family"][0],
            "math_fontfamily": _yt_style["mathtext.fontset"],
        }
    return _DEFAULT_FONT_PROPERTIES