modules/jooby-metrics/src/main/java/org/jooby/metrics/Metrics.java
public Metrics ping() {
    bindings.add((binder, routes, conf) -> {
      routes.use("GET", this.pattern + "/ping", new PingHandler());
    });
    return this;
  }
public Metrics ping() {
    bindings.add((binder, routes, conf) -> {
      routes.use("GET", this.pattern + "/ping", new PingHandler());
    });
    return this;
  }
Append a simple ping handler that results in a <code>200</code> responses with a
<code>pong</code> body. See {@link PingHandler}

@return This metrics module.