@property
    def basedOn_val(self):
        basedOn = self.basedOn
        if basedOn is None:
            return None
        return basedOn.val
Value of `w:basedOn/@w:val` or |None| if not present.
dataset/ETHPy150Open python-openxml/python-docx/docx/oxml/styles.py/CT_Style.basedOn_val