code: private void retinasApiUsage() throws ApiException {
          LOG.info("The Retinas API usage.");
          
          Retinas api = getInfo("api.cortical.io", API_KEY);
          
          LOG.info("Retinas API: getRetinas");
          List<Retina> retinas = api.getAllRetinas();
          
          for (Retina retina : retinas) {
              LOG.info("Retina:  Name: " + retina.getRetinaName() + "  Description: " + retina.getRetinaDescription()
                      + "  Terms in the retina:  " + retina.getNumberOfTermsInRetina());
          }
          Retina retina = api.retinaByName(RETINA_NAME);
          LOG.info("Retina:  Name: " + retina.getRetinaName() + "  Description: " + retina.getRetinaDescription()
                  + "  Terms in the retina:  " + retina.getNumberOfTermsInRetina());
      }
docs: The Retinas API usage.
  
  @throws ApiException