docs: public List<WebServiceFeature> getWSFeatureForSEIClass(String seiClassName) {
          PortComponentRefInfo portComponentRefInfo = seiNamePortComponentRefInfoMap.get(seiClassName);
  
          if (portComponentRefInfo == null) {
              return Collections.emptyList();
          }
  
          List<WebServiceFeatureInfo> featureInfos = portComponentRefInfo.getWebServiceFeatureInfos();
  
          if (featureInfos.isEmpty()) {
              return Collections.emptyList();
          }
          List<WebServiceFeature> wsFeatures = new ArrayList<WebServiceFeature>(featureInfos.size());
  
          for (WebServiceFeatureInfo featureInfo : featureInfos) {
              wsFeatures.add(featureInfo.getWebServiceFeature());
          }
          return wsFeatures;
      }