public virtual void MergeFrom(SeoInfo source)
        {
            SemanticUrl  = source.SemanticUrl;
            LanguageCode = source.LanguageCode;
            StoreId      = source.StoreId;

            if (PageTitle.IsNullOrEmpty())
            {
                PageTitle = source.PageTitle;
            }

            if (MetaDescription.IsNullOrEmpty())
            {
                MetaDescription = source.MetaDescription;
            }
        }