node1.start();
configuration = factory.createNodeConfiguration();
configuration.setDomainURI("tuscany:default");
configuration.setURI("node2");
configuration.addContribution("c1", "./target/classes");
configuration.addDeploymentComposite("c1","CallBackReference.composite");
//node2 = factory.newInstance().createNode("CallBackReference.composite", new Contribution("c1", "./target/classes"));
node2 = factory.createNode(configuration);
node2.start();