control grouped lights with the following commands:
        </p>
        <ul>
            <li>
                <code>list-grouped-lights</code> To get a list of all grouped
                lights configured on the Hue bridge.
            </li>
            <li>
                <code>get-grouped-light</code> To get information for a single
                grouped light.
            </li>
            <li>
                <code>update-grouped-light</code> To update the state of a
                light group.
  