public async Task Run()
{
var people = await _personProvider.LoadPeople();
if (people == null)
{
Console.WriteLine("No data available.");
return;
}
var filteredData = _aggregationService.Aggregate(
people,
owner => owner.Gender,
pet => pet.Type == PetType.Cat,
pet => pet.Name
);
foreach (var entry in filteredData)
{
Console.WriteLine(entry.Key);
foreach (var pet in entry.Value.OrderBy(p => p))
{
Console.WriteLine($" * {pet}");
}
}
}