code: protected void before(HttpServletRequest request, HttpServletResponse response) {
          final StringBuilder sb = new StringBuilder();
          final String beginDecoration;
          if (isSubRequestUrl(request)) {
              beginDecoration = "- - - - - - - - - - {SUB BEGIN}: ";
          } else { // mainly here
              beginDecoration = "* * * * * * * * * * {BEGIN}: ";
          }
          sb.append(beginDecoration);
          sb.append(getTitlePath(request));
          sb.append(LF).append(IND);
          buildRequestInfo(sb, request, response, /*showResponse*/false, /*showErrorFlush*/false);
          logger.debug(sb.toString().trim());
      }
docs: ------