Extension method for adding content to an instance of a DocumentSearchEventArgs (Kentico)

DocumentSearchEventArgsExtensions.cs

using CMS.DocumentEngine;

namespace Example.Linq
{
    public static class DocumentSearchEventArgsExtensions
    {
        public static void AddContent(this DocumentSearchEventArgs searchEventArgs, string content)
        {
            searchEventArgs.Content += $" {content}";
        }
    }
}