private static void CheckBoundary(XmlNode fieldNode, Field field, Catalog catalog) { var polygons = fieldNode.SelectNodes("PLN"); if (polygons.Count == 0) { return; } var boundary = catalog.FieldBoundaries.Single(b => b.Id.ReferenceId == field.ActiveBoundaryId); MultiPolygonAssert.AreEqual(polygons, boundary.SpatialData); }