code: @SuppressWarnings("dep-ann")
      @JSFProperty(stateHolder=true, returnSignature = "void",
              methodSignature = "javax.faces.context.FacesContext,javax.faces.component.UIComponent,java.lang.Object")
      public MethodBinding getValidator()
      {
          return (MethodBinding) getStateHelper().eval(PropertyKeys.validator);
      }
docs: A method-binding EL expression which is invoked during the validation phase for this component.
  <p>
  The invoked method is expected to check the submitted value for this component, and if not acceptable then report
  a validation error for the component.
  </p>
  <p>
  The method is expected to have the prototype
  </p>
  <code>public void aMethod(FacesContext, UIComponent,Object)</code>
  
  @deprecated