public void plan_flowpart() {
FlowGraphGenerator comp = new FlowGraphGenerator();
comp.defineInput("in");
comp.defineOperator("op1", "in", "out");
comp.defineOperator("op2", "in", "out", FlowBoundary.SHUFFLE);
comp.defineOutput("out");
comp.connect("in", "op1").connect("op1", "op2").connect("op2", "out");
gen.defineInput("in");
gen.defineFlowPart("c", comp.toGraph());
gen.defineOutput("out");