Relationship rel = john.getPersistentState().getSingleRelationship(DynamicRelationshipType.withName("knows"), Direction.OUTGOING);
assertProperties(rel, "Friendship.");
john.persist();
props.removeProperty("s");
rel = john.getPersistentState().getSingleRelationship(DynamicRelationshipType.withName("knows"), Direction.OUTGOING);
final String prefix = "Friendship.";
assertEquals(100, rel.getProperty(prefix + "personalProperties-x"));
assertEquals(3.1415, ((Double)rel.getProperty(prefix + "personalProperties-pi")).doubleValue(), 0.000000001);