// this = belongs to this model
// "TruckArrivalTimeStream" = the name of the stream
// 3.0 = mean time in minutes between arrival of trucks
// true = show in report?
// false = show in trace?
truckArrivalTime = new ContDistExponential(this, "TruckArrivalTimeStream", 3.0, true, false);
// necessary because an inter-arrival time can not be negative, but
// a sample of an exponential distribution can...
truckArrivalTime.setNonNegative(true);