public string Execute(IReadOnlyList <string> args)
{
if (args.Count != 1)
{
throw new ArgumentException("League name should be entered");
}
var name = args[0];
InputValidations.ValidateLength(InputValidations.MIN_NAME, InputValidations.MAX_NAME, name,
$"A league's name must be between {InputValidations.MIN_NAME} and {InputValidations.MAX_NAME} characters");
var matches = service.CreateMatches(name);
var answer = PrintMatches(matches);
return(answer);
}