code: public Router all(@NotNull final Pattern regex, @NotNull final Middleware... handler) {
          get(regex, handler);
          put(regex, handler);
          post(regex, handler);
          delete(regex, handler);
          options(regex, handler);
          head(regex, handler);
          trace(regex, handler);
          connect(regex, handler);
          patch(regex, handler);
          return this;
      }
docs: Specify a middleware that will be called for all HTTP methods
  @param regex A regular expression
  @param handler The middleware to call