Set<Primitive> primitives = new HashSet<Primitive>();
//System.out.println(s.getBoundary());
primitives.add(s);
primitives.add(s2);
MultiPrimitiveImpl mp = new MultiPrimitiveImpl(crs, primitives);
//System.out.println(mp);
//System.out.println(mp.getBoundary());
//assertEquals(sb, mp.getBoundary());
}