xamarinmac 
namespace AppKit
{
    [Introduced(PlatformName.MacOSX, 10, 10, PlatformArchitecture.All, null)]
    [Register("NSSplitViewItem", true)]
    public class NSSplitViewItem : NSObject, INSCoding, INativeObject, IDisposable
    {
        public override IntPtr ClassHandle { get; }
    }
}
.NET 6.07.08.09.0
Information specific to xamarinmac
Assembly

Xamarin.Mac , Version=0.0.0.0, PublicKeyToken=84e04ff9cfb79065

Referencing

The API is automatically referenced.

Platform Restrictions

This framework does not have platform annotations.

  • Built-in API
  • Package-provided API