code: public static QName getPortQName(ClassInfo classInfo, String seiClassName, String targetNamespace) {
          AnnotationInfo annotationInfo = getAnnotationInfoFromClass(classInfo, "Port QName");
          if (annotationInfo == null) {
              return null;
          }
  
          boolean webServiceProviderAnnotation = isProvider(classInfo);
  
          String wsName = webServiceProviderAnnotation ? null : annotationInfo.getValue(JaxWsConstants.NAME_ATTRIBUTE).getStringValue();
          return getPortQName(classInfo, targetNamespace, wsName, annotationInfo.getValue(JaxWsConstants.PORTNAME_ATTRIBUTE).getStringValue(),
                              JaxWsConstants.PORTNAME_ATTRIBUTE_SUFFIX);
      }
docs: Get portName' QName of Web Service
  
  @param classInfo
  @return