/**
* Creates a KGraph, represented by a parent node that contains the actual nodes and edges of the
* graph.
*
* @return a parent node that contains graph elements
*/
private static KNode createGraph() {
// create parent node
KNode parentNode = KimlUtil.createInitializedNode();
// create child nodes
KNode childNode1 = KimlUtil.createInitializedNode();
// This automatically adds the child to the list of its parent's children.
childNode1.setParent(parentNode);
KLabel nodeLabel1 = KimlUtil.createInitializedLabel(childNode1);
nodeLabel1.setText("node1");
KNode childNode2 = KimlUtil.createInitializedNode();
childNode2.setParent(parentNode);
KLabel nodeLabel2 = KimlUtil.createInitializedLabel(childNode2);
nodeLabel2.setText("node2");
// create ports (optional)
KPort port1 = KimlUtil.createInitializedPort();
// This automatically adds the port to the node's list of ports.
port1.setNode(childNode1);
KPort port2 = KimlUtil.createInitializedPort();
port2.setNode(childNode2);
// create edges
KEdge edge1 = KimlUtil.createInitializedEdge();
// This automatically adds the edge to the node's list of outgoing edges.
edge1.setSource(childNode1);
// This automatically adds the edge to the node's list of incoming edges.
edge1.setTarget(childNode2);
// As our ports do not distinguish between incoming and outgoing edges,
// the edges must be added manually to their list of edges.
edge1.setSourcePort(port1);
port1.getEdges().add(edge1);
edge1.setTargetPort(port2);
port2.getEdges().add(edge1);
return parentNode;
}