xamarinmac 
namespace Foundation
{
    [Register("NSMutableString", true)]
    public class NSMutableString : NSString, 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