Selects the pattern fill type.

        Note that calling this method does not by itself set a foreground or
        background color of the pattern. Rather it enables subsequent
        assignments to properties like fore_color to set the pattern and
        colors.

def patterned(self):
        """Selects the pattern fill type.

        Note that calling this method does not by itself set a foreground or
        background color of the pattern. Rather it enables subsequent
        assignments to properties like fore_color to set the pattern and
        colors.
        """
        pattFill = self._xPr.get_or_change_to_pattFill()
        self._fill = _PattFill(pattFill)