ConstantNode constantNode = (ConstantNode) workflow
.addNode(this.constantComponent);
constantNode.setPosition(new Point(50, 120));
// Output parameter
OutputNode outParamNode = (OutputNode) workflow
.addNode(this.outputComponent);
outParamNode.setPosition(new Point(300, 220));
// Connect ports
graph.addEdge(inputNode.getOutputPort(0), adderNode.getInputPort(0));