api/src/main/java/javax/faces/component/UIPanel.xml

<?xml version="1.0"?>
<component>
    <component-class>javax.faces.component.UIPanel</component-class>
    <base-class>javax.faces.component.UIComponentBase</base-class>
    <component-type>javax.faces.Panel</component-type>
    <component-family>javax.faces.Panel</component-family>
</component>