DefaultLanguageAttribute.cs

using System;
 
namespace Waher.Things.Attributes
{
    [AttributeUsage(AttributeTargets.Class, AllowMultiple = false, Inherited = true)]
    public class DefaultLanguageAttribute : Attribute
    {
        private readonly string languageCode;
 
        public DefaultLanguageAttribute(string LanguageCode)
        {
            this.languageCode = LanguageCode;
        }
 
        public string LanguageCode => this.languageCode;
    }
}