public InMemoryDelayedJob(InMemoryDelayedJobProcessor parent, Envelope envelope, DateTimeOffset executionTime)
{
_parent = parent;
ExecutionTime = executionTime.ToUniversalTime();
envelope.ExecutionTime = null;
Envelope = envelope;
_cancellation = new CancellationTokenSource();
var delayTime = ExecutionTime.Subtract(DateTime.UtcNow);
_task = Task.Delay(delayTime, _cancellation.Token).ContinueWith(publish);
ReceivedAt = DateTime.UtcNow;
}
