code: public static void include(
          HttpServletRequest request,
          HttpServletResponse response,
          String relativePath,
          JspWriter out,
          boolean flush)
          throws IOException, ServletException {
          include((ServletRequest) request, (ServletResponse) response, relativePath, (Writer) out, flush);
      }
docs: For backward compatibility with JSP classes from WAS 5.0 (JSP 1.2), this
  method exposes the signature expected by those classes.
  
  @param request The servlet request we are processing
  @param response The servlet response we are processing
  @param relativePath The relative path of the resource to be included
  @param out The Writer to whom we are currently writing
  @param flush Should we flush before the include is processed?
  
  @exception IOException if thrown by the included servlet
  @exception ServletException if thrown by the included servlet