public static IMDTokenProvider Import(this ModuleDef module, IMDTokenProvider token)
        {
            switch (token)
            {
            case IField field:
                return(module.Import(field));

            case IMethod method:
                return(module.Import(method));

            case IType type:
                return(module.Import(type));

            default:
                throw new ArgumentException("unrecognized token provider type: " + token.GetType());
            }
        }