public static mdr.DProperty CreateProperty(string propertyName)
        {
            EventTypes type = JSEvent.GetPropertyEventType(propertyName);

            if (type == EventTypes.ZoommInvalid)
            {
                throw new Exception(String.Format("Unimplemented EventHandlerProperty {0}", propertyName));
            }
            else
            {
                return(new EventHandlerProperty(type));
            }
        }