Spotify.NET/SpotifyAPI.Web/Models/Request/TrackRequest.cs

namespace SpotifyAPI.Web
{
  public class TrackRequest : RequestParams
  {
    /// <summary>
    /// An ISO 3166-1 alpha-2 country code or the string from_token.
    /// Provide this parameter if you want to apply Track Relinking.
    /// </summary>
    /// <value></value>
    [QueryParam("market")]
    public string? Market { get; set; }
  }
}