ios-samples/BindingSample/XMBindingLibrary/Extras.cs

using System;

namespace XMBindingLibrary {
	partial class XMUtilities {
		// NOTE:
		// We can add additional members in this file that were never in the
		// original binding.
		public nint Subtract (nint operandUn, nint operandDeux)
		{
			return Add (operandUn, -operandDeux);
		}
	}
}