code: public String getSeasonYear(String id, int seasonNbr, String language) throws TvDbException {
          String year = null;
  
          Episode episode = getEpisode(id, seasonNbr, 1, language);
          if (episode != null && StringUtils.isNotBlank(episode.getFirstAired())) {
              Date date;
  
              try {
                  SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
                  date = dateFormat.parse(episode.getFirstAired());
              } catch (ParseException ex) {
                  LOG.trace("Failed to transform date: {}", episode.getFirstAired(), ex);
                  date = null;
              }
  
              if (date != null) {
                  Calendar cal = Calendar.getInstance();
                  cal.setTime(date);
                  year = String.valueOf(cal.get(Calendar.YEAR));
              }
          }
  
          return year;
      }
docs: Get a list of banners for the series id
  
  @param id
  @param seasonNbr
  @param language
  @return
  @throws com.omertron.thetvdbapi.TvDbException