https://access.redhat.com/webassets/avalon/d/red_hat_build_of_eclipse_vert.x/4.0.3/vertx_javadocs/io/vertx/core/metrics/impl/DummyVertxMetrics.DummyHttpClientMetrics.html
DummyVertxMetrics.DummyHttpClientMetrics (Vertx Javadocs 4.0.3.GA API)
vertxjavadocsgaapi