Given a selector and transition duration, toggle lights (on/off)

def toggle_power(self, selector='all', duration=1.0):
        """Given a selector and transition duration, toggle lights (on/off)"""

        argument_tuples = [
            ("duration", duration)
        ]

        return self.client.perform_request(
            method='post', endpoint='lights/{}/toggle',
            endpoint_args=[selector], argument_tuples=argument_tuples)