public CityReport Generate(City city)
{
var sb = new MyStringBuilder();
sb.AppendLine("City name: " + city.Name);
sb.AppendLine("Number of customers in the city: " + city.Customers.Length.AsString());
sb.AppendLine();
foreach (var subReport in city.Customers.Select(x => customerReportGenerator.Generate(x)))
{
sb.AppendLine(subReport.Value);
}
return(new CityReport(sb.ToString()));
}
