@classmethod
    def validate(cls, value):
        cls.validate_string(value)
        if cls._members not in value:
            raise ValueError(
                "must be one of %s, got '%s'" % (cls._members, value)
            )
dataset/ETHPy150Open python-openxml/python-docx/docx/oxml/simpletypes.py/BaseStringEnumerationType.validate/swapped operands of `not in`