def METHOD_NAME(self, args):
    # Write the <c:pieChart> element.  Over-ridden method to remove
    # axis_id code since Pie charts don't require val and cat axes.
    self._xml_start_tag('c:pieChart')
    # Write the c:varyColors element.
    self._write_vary_colors()
    # Write the series elements.
    for data in self.series:
        self._write_ser(data)
    # Write the c:firstSliceAng element.
    self._write_first_slice_ang()
    self._xml_end_tag('c:pieChart')