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); }