def scale_xy(self, x=<NUM_LIT:0>, y=None):
self.root.set("<STR_LIT>", "<STR_LIT>" %<EOL>(self.root.get("<STR_LIT>") or '<STR_LIT>',<EOL>x, y if y is not None else '<STR_LIT>'))<EOL>
Scale element separately across the two axes x and y.
            If y is not provided, it is assumed equal to x (according to the
            W3 specification).

        Parameters
        ----------
        x : float
            x-axis scaling factor. To scale down x < 1, scale up x > 1.
        y : (optional) float
            y-axis scaling factor. To scale down y < 1, scale up y > 1.