def get_by_id(self, styleId):
        xpath = 'w:style[@w:styleId="%s"]' % styleId
        try:
            return self.xpath(xpath)[0]
        except IndexError:
            return None
Return the ``<w:style>`` child element having ``styleId`` attribute
dataset/ETHPy150Open python-openxml/python-docx/docx/oxml/styles.py/CT_Styles.get_by_id