public async Task Refresh()
        {
            if (m_dataSearchService == null)
            {
                m_dataSearchService = SearchServiceProvider.GetDataSearchService();
            }

            var symbols = await m_dataSearchService.Search(string.Empty);

            Data        = new List <SymbolData>(symbols.Where(s => s.m_isQuotable && s.m_isTradable));
            LastUpdated = DateTime.Now;
            await Save();
        }
 public QuestradeSymbolDataConfig(DataSearchService dataSearchService) : this()
 {
     m_dataSearchService = dataSearchService;
 }