public void ShouldWriteManyToOnes()
        {
            var mapping = new NaturalIdMapping();
            mapping.AddReference(new ManyToOneMapping());

            writer.VerifyXml(mapping)
                .Element("many-to-one").Exists();
        }
        public void ShouldWriteProperties()
        {
            var mapping = new NaturalIdMapping();
            mapping.AddProperty(new PropertyMapping());

            writer.VerifyXml(mapping)
                .Element("property").Exists();
        }
        public virtual void Visit(NaturalIdMapping naturalIdMapping)
        {

        }
        public virtual void ProcessNaturalId(NaturalIdMapping naturalIdMapping)
        {

        }