* <li><b>cls</b> : String<div class="sub-desc">The CSS class name</div></li>
* <li><b>iconCls</b> : String<div class="sub-desc">A CSS class to provide appearance for an icon.</div></li>
* </ul></div>
* <li><b>cls</b> : String<div class="sub-desc">The CSS class name</div></li>
* <li><b>iconCls</b> : String<div class="sub-desc">A CSS class to provide appearance for an icon.</div></li>
* </ul></div>