code: public URLStreamHandler createURLStreamHandler (String protocol)
      {
          Class<? extends URLStreamHandler> handler = _handlers.get(protocol.toLowerCase());
          if (handler != null) {
              try {
                  return handler.newInstance();
              } catch (Exception e) {
                  log.warning("Unable to instantiate URLStreamHandler", "protocol", protocol,
                              "cause", e);
              }
          }
          return null;
      }
docs: documentation inherited from interface URLStreamHandlerFactory