eturn Value</h3><p>This widget to aid method chaining.

</p><p><h3>Callback Arguments</h3>These are the fields within the callback's <a href="     ../../element/element.html#CommandArgs">CommandArgs</a> parameter which
     are populated by this method when the callback is executed.
     <p>         <table class="parameter-list">             <tr><td>CommandArgs.element</td><td>The menu that executed the callback.</td></tr>
             <tr><td>CommandArgs.uniqueData</td><td>The label of the menu entry 