long startTime = System.currentTimeMillis();
Resource resultResource = resourceSet.getResource(root.eResource().getURI(), true);
System.out.println("Traversing the object tree");
new TreeVisitor().doSwitch(resultResource.getContents().get(0));
long endTime = System.currentTimeMillis();
System.out.println("Time to load " + numberObjects + " children using " + (useMongoResourceSet ? "custom map" : "default map") + ": " + (endTime - startTime) + " ms");
}