FlushManager flushManager = new FlushManager();
PhotographerBi_1_1_1_1 a = new PhotographerBi_1_1_1_1();
a.setPhotographerId(1);
AlbumBi_1_1_1_1 b = new AlbumBi_1_1_1_1();
b.setAlbumId("b1");
PhotoBi_1_1_1_1 c = new PhotoBi_1_1_1_1();
c.setPhotoId("c1");
b.setPhotographer(a);
b.setPhoto(c);
ObjectGraph graph = graphBuilder.getObjectGraph(b, null);
pc.getMainCache().addGraphToCache(graph, pc);
markAllNodeAsDirty();