public GainCapitalRatesManager(ILoggerWrapper wrapper, IGainCapitalRatesService gainCapitalRatesService, IGainCapitalRatesParser gainCapitalRatesParser) { if (wrapper == null) { throw new ArgumentNullException("wrapper"); } if (gainCapitalRatesService == null) { throw new ArgumentNullException("gainCapitalRatesService"); } if (gainCapitalRatesParser == null) { throw new ArgumentNullException("gainCapitalRatesParser"); } _wrapper = wrapper; _gainCapitalRatesParser = gainCapitalRatesParser; _gainCapitalRatesService = gainCapitalRatesService; _cts = new CancellationTokenSource(); _factory = new TaskFactory(_cts.Token); }