* This is the entry point method.
*/
public void onModuleLoad() {
JSONObject n1 = new JSONObject();
n1.put("id", new JSONNumber(1));
n1.put("text", new JSONString("Node 1"));
JSONObject n2 = new JSONObject();
n2.put("id", new JSONNumber(2));
n2.put("text", new JSONString("Node 2"));
JSONObject n3 = new JSONObject();
n3.put("id", new JSONNumber(3));
n3.put("text", new JSONString("Node 3"));
JSONArray nodes = new JSONArray();
nodes.set(0, n1);
nodes.set(1, n2);
nodes.set(2, n3);
JSONObject l1 = new JSONObject();
l1.put("from", new JSONNumber(1));
l1.put("to", new JSONNumber(2));
JSONObject l2 = new JSONObject();
l2.put("from", new JSONNumber(1));
l2.put("to", new JSONNumber(3));
JSONObject l3 = new JSONObject();
l3.put("from", new JSONNumber(2));
l3.put("to", new JSONNumber(3));
JSONArray links = new JSONArray();
links.set(0, l1);
links.set(1, l2);
links.set(2, l3);
JSONObject p1 = new JSONObject();
p1.put("from", new JSONNumber(1));
p1.put("to", new JSONNumber(2));
p1.put("duration", new JSONNumber(5));
JSONObject p2 = new JSONObject();
p2.put("from", new JSONNumber(1));
p2.put("to", new JSONNumber(3));
p2.put("duration", new JSONNumber(3));
JSONObject p3 = new JSONObject();
p3.put("from", new JSONNumber(2));
p3.put("to", new JSONNumber(3));
p3.put("duration", new JSONNumber(1));
JSONArray packages = new JSONArray();
packages.set(0, p1);
packages.set(1, p2);
packages.set(2, p3);