def remove(self, key):
        """
        Clear a column value in the object. Note that this happens immediately:
        it does not wait for save() to be called.
        """
        payload = {
            key: {
                '__op': 'Delete'
                }
            }
        self.__class__.PUT(self._absolute_url, **payload)
        del self.__dict__[key]
Clear a column value in the object. Note that this happens immediately:
        it does not wait for save() to be called.