public static int IdentifySymbolValue(this ILanguageRuntime @this, object value)
        {
            if (value == null)
            {
                return(PredefinedTokens.Eoi);
            }

            return(@this.Identify(value.GetType()));
        }
        public static Msg Literal(this ILanguageRuntime @this, string literal)
        {
            var id = @this.Identify(literal);

            return(new Msg(id, null, Loc.Unknown));
        }