gen.connect("in1", "op1").connect("op1", "op2").connect("op2", "out1");
FlowBlock bin = FlowBlock.fromPorts(
0,
gen.toGraph(),
new ArrayList<FlowElementInput>(gen.inputs()),
Arrays.asList(gen.output("in1")),
gen.getAsSet("in1"));
FlowBlock b1 = FlowBlock.fromPorts(
0,
gen.toGraph(),
Arrays.asList(gen.input("op1")),