docs: function(err, req, res, next) {
  
          function done(error) {
              log(req, util.format('middleware-end %s', name));
              next(error);
          }
  
          if (err && !errHandler) {
              log(req, util.format('skipped %s Hook is not for error handling', name));
              next(err);
  
          } else if (!err && errHandler) {
              log(req, util.format('skipped %s Hook is for error handling', name));
              next();
  
          } else {
              try {
                  log(req, util.format('middleware-start %s', name));
                  errHandler ? hook(err, req, res, done) : hook(req, res, done);
              } catch (err) {
                  done(err);
              }
  
          }
      }