code: @Override
      public boolean isWrapperFor(ServletRequest wrapped) {
          final ServletRequest request = getHttpServletRequest();
  
          if (request == wrapped) {
              return true;
          } else if (request instanceof ServletRequestWrapper) {
              return ((ServletRequestWrapper) request).isWrapperFor(wrapped);
          } else {
              return false;
          }
      }
docs: /*
  (non-Javadoc)
  
  @see javax.servlet.ServletRequestWrapper#isWrapperFor(javax.servlet.ServletRequest)