SurfaceBoundary surfaceBoundary1 = primf.createSurfaceBoundary(exteriorRing, interiors );
Surface surface = primf.createSurface(surfaceBoundary1);
Set<OrientableSurface> surfaces = new HashSet<OrientableSurface>();
surfaces.add(surface);
MultiSurface ms = agf.createMultiSurface(surfaces);
//System.out.println(ms);
//System.out.println(ms.getBoundary());
//assertNotNull(ms.getBoundary());
// test equals
assertTrue(ms.equals(new MultiSurfaceImpl(ms.getCoordinateReferenceSystem(), surfaces)));
}