EnvelopeGenerator/EnvelopeGenerator.API/Models/Culture.cs

using System.Globalization;

namespace EnvelopeGenerator.GeneratorAPI.Models;

public class Culture
{
    private string _language = string.Empty;
    public string Language { get => _language;
        init {
            _language = value;
            Info = new(value);
        } 
    }
    public string FIClass { get; init; } = string.Empty;

    public CultureInfo? Info { get; init; }
}