xamarinios 
namespace ObjCRuntime
{
    [AttributeUsage(AttributeTargets.All, AllowMultiple = true)]
    [Obsolete("Use [Introduced|Deprecated|Obsoleted|Unavailable] attributes with PlatformName.")]
    public class AvailabilityAttribute : Attribute
    {
        public Platform ObsoletedVersion { get; }
    }
}
Xamarin iOS 0.0
Xamarin macOS 0.0
Information specific to xamarinios
Assembly

Xamarin.iOS , 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