public void Apply(Document entity, Patcher patcher)
{
entity.Id = Id;
entity.Title = Title;
entity.Description = Description;
entity.UserId = UserId;
if (entity.IsNew())
{
entity.Archive = patcher.NewInstance(Archive);
entity.CreateDate = DateTime.Now;
}
else
{
patcher.AttachAndApply(Archive, entity.ArchiveId);
}
}