@Test
@Transactional
public void testRelationshipRemoveProperty() {
Person james = persistedPerson("James", 36);
Person john = persistedPerson("John", 36);
Friendship f = john.knows(james);
DynamicProperties props = f.getPersonalProperties();
props.setProperty("s", "String");
props.setProperty("x", 100);
props.setProperty("pi", 3.1415);
Relationship rel = john.getPersistentState().getSingleRelationship(DynamicRelationshipType.withName("knows"), Direction.OUTGOING);