public Dictionary<string, string> GetRate()
        {
            Dictionary<string, string> items;
            string path = ConfigurationManager.AppSettings["path"] + ConfigurationManager.AppSettings["access_key"];

            if (new Uri(path).IsFile)
            {
                var fileObj = new FetchFromFile(path);
                items = fileObj.FetchRate();
            }

            else
            {
                var webObj = new FetchFromWeb(path);
                items = webObj.FetchRate();
            }
            return items;
        }
        public Dictionary <string, string> GetRate()
        {
            Dictionary <string, string> items;
            string path = ConfigurationManager.AppSettings["path"] + ConfigurationManager.AppSettings["access_key"];

            if (new Uri(path).IsFile)
            {
                var fileObj = new FetchFromFile(path);
                items = fileObj.FetchRate();
            }

            else
            {
                var webObj = new FetchFromWeb(path);
                items = webObj.FetchRate();
            }
            return(items);
        }