namespace EnvelopeGenerator.Web.Models { public class Cultures : List { public IEnumerable Languages => this.Select(c => c.Language); public IEnumerable FIClasses => this.Select(c => c.FIClass); public Culture Default => this.First(); public Culture? this[string? language] => language is null ? null : this.Where(c => c.Language == language).FirstOrDefault(); } }