Unwrap the single Result item. Call this from single-operation
        methods to return the actual result
        :return: The actual result

def unwrap_single(self):
        """
        Unwrap the single Result item. Call this from single-operation
        methods to return the actual result
        :return: The actual result
        """
        try:
            return next(self.itervalues())
        except AttributeError:
            return next(iter(self.values()))