sData`.
        loc : str
            Location of this artist.  Valid locations are
            'upper left', 'upper center', 'upper right',
            'center left', 'center', 'center right',
            'lower left', 'lower center', 'lower right'.
            For backward compatibility, numeric values are accepted as well.
            See the parameter *loc* of `.Legend` for details.
        pad : float, default: 0.4
            Padding around the child objects, in fraction of the font size.
        borderpad : float, default: 0.5
            Border padding, in fraction of the font size.
        prop : `~matplotlib.font_manager.FontProperties`, optional
            Font property used as a reference for paddings.
        frameon : bool, default: True
            If True, draw a box around this artist.
        **kwargs
            Keyword arguments forwarded to `.AnchoredOffsetbox`.

        Attributes
        ----------
        drawing_area : `~matplotlib.offsetbox.AuxTransformBox`
            A container for artists to display.

        Examples
        --------
        To display an ellipse in the upper left, with a width of 0.1 and
        height of 0.4 in data coordinates:

        >>> box = AnchoredAuxTransformBox(ax.transData, loc='upper left')
        >>> el = Ellipse((0, 0), width=0.1, height=0.4, angle=30)
        >>> box.drawing_area.add_artist(el)
        >>> ax.add_artist(box)
        r