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);
Resource r1e2 = registry.get("/props/t3/r1");
assertFalse("Property is not edited.", r1e2.getPropertyValues("p1").contains("v1"));