/// <summary>
/// Convert from a <see cref="IJourneyViewModel"/> to a <see cref="IJourneyDetailsType"/>.
/// </summary>
/// <param name="input"><see cref="IJourneyViewModel"/> to convert</param>
/// <returns>converted <see cref="IJourneyDetailsType"/></returns>
public static IJourneyDetailsType ToJourneyModel(IJourneyViewModel input)
{
List <string> units = new List <string>();
JourneyFactory.Add(units, input.UnitOne);
JourneyFactory.Add(units, input.UnitTwo);
JourneyFactory.Add(units, input.UnitThree);
JourneyFactory.Add(units, input.UnitFour);
IJourneyDetailsType model =
new JourneyDetailsType(
input.JnyId.Date,
input.JnyId.JnyNumber,
input.From,
input.To,
input.Route,
input.Distance,
units);
return(model);
}