element in Facelets VDL that has attributes that need to take action on a Jakarta Faces
 Java API artifact is associated with an instance of this class. This class is an abstraction to enable a rule based
 method for directing how different kinds of elements take different kinds of actions in the Jakarta Faces Java
 API. For example, consider this markup:
 </p>

 <div class="changed_added_2_0">

 <pre>
 <code>&lt;h:inputText value="#{user.userid}"
 valueChangeListener="#{user.newUserId}" /&gt;</code>
 </pre