fluent nhiberante guid mapping

guid.cs

        public TagMap()
        {
            Table("general_tags");

            #region EntityBase
            //Id(x => x.Id, "tagId").GeneratedBy.HiLo("nhibernate_hilo", "tag_NextHi", "5");
            Id(x => x.Id, "tagId").GeneratedBy.Guid();
            Map(x => x.IsDeleted, "isDeleted").CustomType(typeof(bool));
            #endregion




            Map(x => x.Tag, "tag");
            Map(x => x.UrlName, "urlName");
            HasMany(x => x.TagRelations).Table("general_content_tags").KeyColumn("tagId");
        }