AppMetrics.Client.Tracker.Tracker C# (CSharp) Method

        private Tracker(string url, string applicationKey, string accessKey)
        {
            if (string.IsNullOrEmpty(url))
                throw new ArgumentNullException();
            Url = url;

            if (string.IsNullOrEmpty(applicationKey))
                throw new ArgumentNullException();
            ApplicationKey = applicationKey;

            AccessKey = accessKey;

            SessionId = Guid.NewGuid().ToString();

            lock (Sync)
            {
                Sessions.Add(this);
            }
            ReportPeriodicInfo();
        }