public void TestContains()
        {
            var sum = 0;

            Parallel.ForEach(polygons, polygon =>
            {
                var result = relations.STContains(polygon.Geom, exclude: polygon.HarbourId);
                sum       += result.Count();
                Assert.IsTrue(!result.Any(r => r.Value == polygon.HarbourId));
            });
            Assert.IsTrue(sum > 0);
        }