public string Execute(IReadOnlyList <string> args)
{
if (args.Count != 4)
{
throw new ArgumentException("A stadium has to have a name, city, country and capacity.");
}
var name = args[0];
var city = args[1];
var country = args[2];
var capacity = InputValidations.ValidateRatingConversion(InputValidations.MIN_STADIUM, InputValidations.MAX_STADIUM, args[3],
"Invalid Stadium Capacity");
InputValidations.ValidateLength(InputValidations.MIN_NAME, InputValidations.MAX_NAME, name,
$"A stadium name must be between {InputValidations.MIN_NAME} and {InputValidations.MAX_NAME} characters");
InputValidations.ValidateLength(InputValidations.MIN_NAME, InputValidations.MAX_NAME, city,
$"A city name must be between {InputValidations.MIN_NAME} and {InputValidations.MAX_NAME} characters");
InputValidations.ValidateLength(InputValidations.MIN_NAME, InputValidations.MAX_NAME, country,
$"A country name must be between {InputValidations.MIN_NAME} and {InputValidations.MAX_NAME} characters");
service.CreateStadium(name, city, country, capacity);
return($"Stadium {name} in {city} has been created.");
}