List<Painting> cachedResult = context.performQuery(q);
assertFalse(cachedResult.isEmpty());
Painting p1 = cachedResult.get(0);
Object toOnePrefetch = p1.readNestedProperty("toArtist");
assertNotNull(toOnePrefetch);
assertTrue("Expected Artist, got: " + toOnePrefetch.getClass().getName(),
toOnePrefetch instanceof Artist);
Artist a1 = (Artist) toOnePrefetch;