 with <a href="dart-developer/registerExtension.html">registerExtension</a>.</p>
<p>Must complete to a <a href="dart-developer/ServiceExtensionResponse-class.html">ServiceExtensionResponse</a>. <code>method</code> is the method name
of the service protocol request, and <code>parameters</code> is a map holding the
parameters to the service protocol request.</p>
<p><em>NOTE</em>: all parameter names and values are encoded as strings.</p>
    </section>
        <section class="summary source-code" id="source">