@stack.setter
    def stack(self, value):
        """The stack property.
        
        Args:
            value (string). the property value.
        """
        if value == self._defaults['stack'] and self._values in 'stack':
            del self._values['stack']
        else:
            self._values['stack'] = value
dataset/ETHPy150Open Microsoft/ApplicationInsights-Python/applicationinsights/channel/contracts/ExceptionDetails.py/ExceptionDetails.stack/swapped operands of `in`