using System.Runtime.CompilerServices; namespace System { partial class Object { [MethodImplAttribute (MethodImplOptions.InternalCall)] public extern Type GetType (); [MethodImplAttribute (MethodImplOptions.InternalCall)] protected extern object MemberwiseClone (); // TODO: Move to RuntimeHelpers [MethodImplAttribute (MethodImplOptions.InternalCall)] internal static extern int InternalGetHashCode (object o); [Intrinsic] internal ref byte GetRawData () => throw new NotImplementedException (); internal object CloneInternal () => MemberwiseClone (); } }