public string Execute(IReadOnlyList <string> args)
{
if (args.Count != 3)
{
throw new ArgumentException("Write 3 parameters separated by (;).");
}
var name = args[0];
var city = args[1];
var league = args[2];
InputValidations.ValidateLength(InputValidations.MIN_NAME, InputValidations.MAX_NAME, name,
$"Team's name must be between {InputValidations.MIN_NAME} and {InputValidations.MAX_NAME} characters");
InputValidations.ValidateLength(InputValidations.MIN_NAME, InputValidations.MAX_NAME, city,
$"Team's city must be between {InputValidations.MIN_NAME} and {InputValidations.MAX_NAME} characters");
InputValidations.ValidateLength(InputValidations.MIN_NAME, InputValidations.MAX_NAME, league,
$"A league's name must be between {InputValidations.MIN_NAME} and {InputValidations.MAX_NAME} characters");
service.AddTeamToLeague(name, city, league);
return($"Team {name} {city} has been added to league {league}.");
}