spectre.console/test/Spectre.Console.Tests/Data/Commands/DogCommand.cs

namespace Spectre.Console.Tests.Data;

[Description("The dog command.")]
public class DogCommand : AnimalCommand<DogSettings>
{
    public override ValidationResult Validate(CommandContext context, DogSettings settings)
    {
        if (context is null)
        {
            throw new System.ArgumentNullException(nameof(context));
        }

        if (settings is null)
        {
            throw new System.ArgumentNullException(nameof(settings));
        }

        if (settings.Age > 100 && !context.Remaining.Raw.Contains("zombie"))
        {
            return ValidationResult.Error("Dog is too old...");
        }

        return base.Validate(context, settings);
    }

    public override int Execute(CommandContext context, DogSettings settings)
    {
        DumpSettings(context, settings);
        return 0;
    }
}