def METHOD_NAME(self, *options, **kw):
    """Return font metrics.
    For best performance, create a dummy widget
    using this font before calling this method."""
    args = ()
    displayof = kw.pop('displayof', None)
    if displayof:
        args = ('-displayof', displayof)
    if options:
        args = args + self._get(options)
        return self._tk.getint(
            self._call("font", "metrics", self.name, *args))
    else:
        res = self._split(self._call("font", "metrics", self.name, *args))
        options = {}
        for i in range(0, len(res), 2):
            options[res[i][1:]] = self._tk.getint(res[i+1])
        return options