code: @Override
      public String readValue(String column, int line) {
          final String url = this.norauiWebServicesApi + scenarioName + COLUMN + (columns.indexOf(column) + 1) + LINE + line;
          try {
              return httpService.get(url);
          } catch (TechnicalException | NumberFormatException | HttpServiceException e) {
              return "";
          }
      }
docs: {@inheritDoc}