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

<?xml version="1.0" encoding="ISO-8859-1" ?>

<!DOCTYPE component PUBLIC
  "-//MyFaces//DTD MyFaces component def 1.0//EN"
  "http://myfaces.apache.org/dtd/Component.dtd">

<component generateStateMethods="true">
    <component-class>javax.faces.component.UICommand</component-class>
    <base-class>javax.faces.component.UIComponentBase</base-class>
    <component-type>javax.faces.Command</component-type>
    <component-family>javax.faces.Command</component-family>
    <renderer-type>javax.faces.Button</renderer-type>
    <field generateProperty="false">
        <name>action</name>
        <type>javax.faces.el.MethodBinding</type>
    </field>
    <field generateProperty="false">
        <name>actionListener</name>
        <type>javax.faces.el.MethodBinding</type>
    </field>
    <field>
        <name>immediate</name>
        <type>boolean</type>
        <default-value>false</default-value>
    </field>
    <field>
        <name>value</name>
        <type>java.lang.Object</type>
    </field>
</component>