private DateTime?ExtractAisUpdateTimeFromHtml1(string html_document_1)
        {
            if (_creator.CreateNodeCollection(html_document_1) != null)
            {
                foreach (HtmlNode row in _creator.CreateNodeCollection(html_document_1))
                {
                    if (_stringParser.IsRowTimeRow(row.InnerHtml))
                    {
                        string time = _stringParser.GetTrimmedTime2(row.InnerHtml);
                        return(_stringParser.ParsedTrimmedNullableDateTime(time));
                    }
                }
            }

            return(null);
        }