//adds entries for a specific destination and time for each day of the week assigned to an airliner
        public void AddDailyEntries(RouteEntryDestination destination, TimeSpan time, FleetAirliner airliner)
        {
            foreach (DayOfWeek day in Enum.GetValues(typeof (DayOfWeek)))
            {
                var entry = new RouteTimeTableEntry(this, day, time, destination) {Airliner = airliner};

                Entries.Add(entry);
            }
        }
        //adds entries for a specific destination and for each weekday of the week assinged to an airliner
        public void AddWeekDailyEntries(RouteEntryDestination destination, TimeSpan time)
        {
            foreach (DayOfWeek day in Enum.GetValues(typeof (DayOfWeek)))
            {
                if (day != DayOfWeek.Saturday && day != DayOfWeek.Sunday)
                {
                    var entry = new RouteTimeTableEntry(this, day, time, destination) {Airliner = null};

                    Entries.Add(entry);
                }
            }
        }
 //adds entries for a specific destination and time for each day of the week
 public void addDailyEntries(RouteEntryDestination destination, TimeSpan time)
 {
     addDailyEntries(destination, time, null);
 }