code: public Metrics request(final String method, final String pattern) {
      routes.add(r -> r.use(method, pattern, new InstrumentedHandler()));
      return this;
    }
docs: Instrument request using {@link InstrumentedHandler}.
  
  @param method Method to filter for. Default is: <code>GET</code>.
  @param pattern A pattern to filter for. Default is: <code>*</code> (all the requests).
  @return This metrics module.