code: public String forecastJsonString(ForecastRequest request) throws ForecastException {
  	notNull("The ForecastRequest cannot be null.", request);
  
  	return new String(forecastJsonBytes(request));
      }
docs: Returns the forecast response as String.
  
  @param request The Forecast Request which is executed. Use {@link ForecastRequestBuilder} to build the request.
  @return The forecast unparsed as byte encoded Json.
  
  @throws ForecastException if the forecast cannot be fetched.