public async Task <IEnumerable <Flight> > GetAllFlights(DateTime relativeTo)
{
// get the server list from the server model
List <Server> externalServers = (List <Server>)serverModel.GetAllExternalServers();
// creating the list of all flights
List <Flight> serversFlightsList = new List <Flight>();
// get the flights list from each server in the servers list
foreach (Server server in externalServers)
{
// get the flights from the server
List <Flight> serverFlights = (List <Flight>) await
GetOuterFlights(server, relativeTo);
// adding thos flights to our list
serversFlightsList.AddRange(serverFlights);
}
// get all our internal flights
List <Flight> internalFlightsList = (List <Flight>) await
GetAllInternalFlights(relativeTo);
// adding our internal flight to the list of all flights
serversFlightsList.AddRange(internalFlightsList);
return(serversFlightsList);
}