public object Execute(TransformContext context)
            {
                var service = context.Service <ISimpleService>();
                var arg     = context.Arguments.Get <string>("foo");

                return(service.ToUpper(arg));
            }
        public object Execute(TransformContext context)
        {
            var input = context.Arguments.Get <string>("input");
            var data  = new ModelData();

            context
            .Service <IEmailParser>()
            .Parse(formatMessage(input, context.Model))
            .Each(_ => data[_.Key] = _.Value);

            return(data);
        }