namespace System.Diagnostics
{
    [DefaultMember("Item")]
    public struct TagList : ICollection<KeyValuePair<string!, object?>>, IEnumerable<KeyValuePair<string!, object?>>, IList<KeyValuePair<string!, object?>>, IReadOnlyCollection<KeyValuePair<string!, object?>>, IReadOnlyList<KeyValuePair<string!, object?>>, IEnumerable
    {
        public int IndexOf(KeyValuePair<string!, object?> item);
    }
}