 boolean that is true when the DBus name
  appears and false when it vanishes.
         (<em>optional</em>)
        </li>
    </ul>

    <h3>Returns:</h3>
    <ol>


<p> a <a href="index.html#Proxy">Proxy</a> object with extra properties:</p>

<ul>
    <li><code>is_connected</code> a boolean property that indicates whether the monitored
    proxy is actually connected. It can be checked before calling methods or
    accessing other properties on the object to avoid errors.</li>
</ul>


    </ol>


    <h3>S