private static void LoadMessageNumber(ValueModel <int> messageNumber)
        {
            var configurationManagerMessageNumber = ConfigurationManager.AppSettings["Publications_messageNumber"];

            messageNumber.SetValue(int.Parse(configurationManagerMessageNumber));
        }
        private static void LoadIntegerValue(string key, ValueModel <int> model)
        {
            var value = ConfigurationManager.AppSettings[key];

            model.SetValue(int.Parse(value));
        }
        private void LoadStringValue(string key, ValueModel <string> model)
        {
            var value = ConfigurationManager.AppSettings[key];

            model.SetValue(value);
        }
        private void LoadDoubleValue(string key, ValueModel <double> model)
        {
            var value = ConfigurationManager.AppSettings[key];

            model.SetValue(double.Parse(value));
        }