public List <KeyValuePair <string, string> > GetRequestParametersList()
        {
            var RequestParametersList = new List <KeyValuePair <string, string> >();

            RequestParametersList.Add(new KeyValuePair <string, string>(PropertyUtility.GetLiteral(this, "Client_id"), Client_id));
            RequestParametersList.Add(new KeyValuePair <string, string>(PropertyUtility.GetLiteral(this, "Client_secret"), Client_secret));
            RequestParametersList.Add(new KeyValuePair <string, string>(PropertyUtility.GetLiteral(this, "Grant_type"), Grant_type));
            RequestParametersList.Add(new KeyValuePair <string, string>(PropertyUtility.GetLiteral(this, "Format"), Format));
            RequestParametersList.Add(new KeyValuePair <string, string>(PropertyUtility.GetLiteral(this, "RefreshToken"), RefreshToken));
            return(RequestParametersList);
        }