code: @JSFProperty(stateHolder=true, returnSignature = "void", methodSignature = "javax.faces.event.ActionEvent")
      public MethodBinding getActionListener()
      {
          return (MethodBinding) getStateHelper().eval(PropertyKeys.actionListener);
      }
docs: A method binding EL expression that identifies an action listener method to be invoked if
  this component is activated by the user.
  <p>
  An action listener method accepts a parameter of type javax.faces.event.ActionEvent and returns void.
  The phase that this event is fired in can be controlled via the immediate attribute.
  
  @deprecated