/// <summary>
        /// Public constructor with required data
        /// </summary>
        /// <param name="_weight"></param>
        /// <param name="_article"></param>
        /// <param name="_tag"></param>
        public ArticleTag(double _weight, WebApi.EF.Models.Article _article, WebApi.EF.Models.Tag _tag)
        {
            Weight = _weight;
            if (_article == null)
            {
                throw new ArgumentNullException(nameof(_article));
            }
            Article = _article;

            if (_tag == null)
            {
                throw new ArgumentNullException(nameof(_tag));
            }
            Tag = _tag;

            Init();
        }
        /// <summary>
        /// Public constructor with required data
        /// </summary>
        /// <param name="_openednumber"></param>
        /// <param name="_time"></param>
        /// <param name="_article"></param>
        /// <param name="_searchingquery"></param>
        public OpenedArticle(DateTime _time, WebApi.EF.Models.Article _article, WebApi.EF.Models.SearchingQuery _searchingquery, int _openednumber = 0)
        {
            OpenedNumber = _openednumber;
            Time         = _time;
            if (_article == null)
            {
                throw new ArgumentNullException(nameof(_article));
            }
            Article = _article;

            if (_searchingquery == null)
            {
                throw new ArgumentNullException(nameof(_searchingquery));
            }
            SearchingQuery = _searchingquery;

            Init();
        }
 /// <summary>
 /// Static create function (for use in LINQ queries, etc.)
 /// </summary>
 /// <param name="_weight"></param>
 /// <param name="_article"></param>
 /// <param name="_tag"></param>
 public static ArticleTag Create(double _weight, WebApi.EF.Models.Article _article, WebApi.EF.Models.Tag _tag)
 {
     return(new ArticleTag(_weight, _article, _tag));
 }
 /// <summary>
 /// Static create function (for use in LINQ queries, etc.)
 /// </summary>
 /// <param name="_openednumber"></param>
 /// <param name="_time"></param>
 /// <param name="_article"></param>
 /// <param name="_searchingquery"></param>
 public static OpenedArticle Create(DateTime _time, WebApi.EF.Models.Article _article, WebApi.EF.Models.SearchingQuery _searchingquery, int _openednumber = 0)
 {
     return(new OpenedArticle(_time, _article, _searchingquery, _openednumber));
 }