public FormatString FormatVariant(string formatKey, params object[] objects)
        {
            var bindable = new FormatString(new LocalisedFormatString(GetLocalisedString(formatKey), objects));

            formattableBindings.Add(bindable);

            return(bindable);
        }
        public FormatString Format(FormattableString formattable)
        {
            var bindable = new FormatString(formattable);

            formattableBindings.Add(bindable);

            return(bindable);
        }