Microsoft.Azure.WebJobs.Script.WebHost.Diagnostics.MetricsEventManager.BeginEvent C# (CSharp) Method

        public object BeginEvent(string eventName)
        {
            if (string.IsNullOrEmpty(eventName))
            {
                throw new ArgumentNullException(nameof(eventName));
            }

            return new SystemMetricEvent
            {
                EventName = eventName.ToLowerInvariant(),
                Timestamp = DateTime.UtcNow
            };
        }

 public object BeginEvent(string eventName, string functionName = null)
 {
     return(_metricsEventManager.BeginEvent(eventName, functionName));
 }