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