Given a selector (defaults to all), return a list of lights.
        Without a selector provided, return list of all lights.

def list_lights(self, selector='all'):
        """Given a selector (defaults to all), return a list of lights.
        Without a selector provided, return list of all lights.
        """

        return self.client.perform_request(
            method='get', endpoint='lights/{}',
            endpoint_args=[selector], parse_data=False)