code: @SuppressWarnings("rawtypes")
      @Override
      public List<Handler> getHandlerChain(PortInfo paramPortInfo) {
          List<Handler> handlers = handlersMap.get(paramPortInfo);
  
          if (handlers == null) {
              handlers = createHandlerFromHandlerInfo(paramPortInfo);
              handlersMap.put(paramPortInfo, handlers);
          }
  //        return Collections.unmodifiableList(handlers);
          return handlers;
      }
docs: /*
  (non-Javadoc)
  
  @see javax.xml.ws.handler.HandlerResolver#getHandlerChain(javax.xml.ws.handler.PortInfo)