code: @JSFProperty(defaultValue = "true", tagExcluded = true)
      public boolean isValid()
      {
          Object value = getStateHelper().get(PropertyKeys.valid);
          if (value != null)
          {
              return (Boolean) value;        
          }
          return true; 
      }
docs: Specifies whether the component's value is currently valid, ie whether the validators attached to this component
  have allowed it.