namespace System.Windows.Forms
{
    [DefaultMember("Item")]
    [Editor("System.Windows.Forms.Design.TreeNodeCollectionEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor))]
    public class TreeNodeCollection : ICollection, IEnumerable, IList
    {
        public virtual TreeNode! Add(string? key, string? text, string? imageKey, string? selectedImageKey);
    }
}