@property
    def cat_xml(self):
        return self._cat_tmpl.format(
            wksht_ref=self._categories_ref, cat_count=len(self._categories),
            cat_pt_xml=self._cat_pt_xml, nsdecls=''
        )
The unicode XML snippet for the ``<c:cat>`` element for this series,
dataset/ETHPy150Open scanny/python-pptx/pptx/chart/data.py/_SeriesData.cat_xml