p.addLibrary(l);
p.addLibrary(l2);
l.addClazz(c);
c.addBlock(m);
p.accept(new VertexCreatingVisitor());
assertEquals(l, l.getElements().get(0));
assertEquals(c, l.getElements().get(1));
assertEquals(m, l.getElements().get(2));
assertEquals(new Vertex(uid, 0), l.vertex);