{
@Test
public void testSimple() throws Exception
{
GatewayLocation gw1 = new SimpleGatewayLocation("GWA", "EPR");
GatewayLocation gw2 = new SimpleGatewayLocation("GWB", "EPR");
Graph graph = new Graph();
ProcessingElementNode a = new ProcessingElementNode("A");
a.addAnnotation(AnnotationKeys.GATEWAY, gw1);
ProcessingElementNode b = new ProcessingElementNode("B");
b.addAnnotation(AnnotationKeys.GATEWAY, gw1);