public void testEditingMultivaluedProperties() throws RegistryException {
Resource r1 = registry.newResource();
r1.setContent("r1 content");
r1.addProperty("p1", "v1");
r1.addProperty("p1", "v2");
registry.put("/props/t3/r1", r1);
Resource r1e1 = registry.get("/props/t3/r1");
r1e1.editPropertyValue("p1", "v1", "v3");
registry.put("/props/t3/r1", r1e1);