builder.addInput("model", Ex1.class);
builder.addOutput("high", Ex1.class);
builder.addOutput("low", Ex1.class);
builder.addOutput("stop", Ex1.class);
builder.addParameter("parameter", int.class, parameter);
FlowElementResolver resolver = builder.toResolver();
resolver.resolveInput("model", model);
this.high = resolver.resolveOutput("high");
this.low = resolver.resolveOutput("low");
this.stop = resolver.resolveOutput("stop");
}