factory.addFunction(new GeometryIsClosed());
factory.addFunction(new GeometryIsValid());
factory.addFunction(new GeometryIsSimple());
factory.addFunction(new GeometryArea());
factory.addFunction(new GeometryDistance());
factory.addFunction(new GeometryIsWithinDistance());
factory.addFunction(new GeometryLength());
factory.addFunction(new GeometryBuffer());
factory.addFunction(new GeometryUnion());