code: public void addWebServiceFeatureInfo(String seiName, WebServiceFeatureInfo featureInfo) {
          PortComponentRefInfo portComponentRefInfo = seiNamePortComponentRefInfoMap.get(seiName);
          if (portComponentRefInfo == null) {
              portComponentRefInfo = new PortComponentRefInfo(seiName);
              seiNamePortComponentRefInfoMap.put(seiName, portComponentRefInfo);
          }
          portComponentRefInfo.addWebServiceFeatureInfo(featureInfo);
      }
docs: Add a feature info to the PortComponentRefInfo, if the target one does not exist, a new one with
  that port component interface will be created
  
  @param seiName port component interface name
  @param featureInfo feature info of the target port