code: public TransportApiResult<Journey> getJourney(String journeyId, String exclude)
      {
      	if (Extensions.isNullOrWhiteSpace(journeyId))
      	{
      		throw new IllegalArgumentException("JourneyId is required.");
      	}
      	
      	return TransportApiClientCalls.getJourney(tokenComponent, settings, journeyId, exclude);
      }
docs: Gets a journey previously requested through the POST journey call.
  
  @param  journeyId  		The id of the journey you want to get. Previously made in a POST journey call.
  @param  exclude  		Entities to exclude from the call to reduce the payload. See https://developer.whereismytransport.com/documentation#excluding-data
  @return      			A previously requested journey.