@Test
 public void testBuffer() throws IOException, RestException {
   Geometry[] results = topoQuery.buffer(baseGeometries, 100);
   Assert.assertTrue(results.length == baseGeometries.length);
   for (int i = 0; i < results.length; i++) {
     Assert.assertNotNull(results[i]);
     Assert.assertTrue(results.toString().length() > 0);
   }
 }