public void Update(IDiaryPage entity)
 {
     DbMock.GetDb().ToList().Remove(entity);
     DbMock.GetDb().ToList().Add(entity);
 }
 public void Delete(IDiaryPage entity)
 {
     DbMock.GetDb().ToList().Remove(entity);
 }
 public void Save(IDiaryPage entity)
 {
     DbMock.GetDb()
     .ToList()
     .Add(entity);
 }