public Builder(VoyageNumber voyageNumber, Location initialDepartureLocation)
{
Validate.notNull(voyageNumber, "Voyage number is required");
Validate.notNull(initialDepartureLocation, "Departure location is required");
this.voyageNumber = voyageNumber;
this.currentDepartureLocation = initialDepartureLocation;
}
public static Voyage lookup(VoyageNumber voyageNumber)
{
return(ALL.ContainsKey(voyageNumber) ? ALL[voyageNumber] : null);
}