class IndexObservation {

    private final ObservationRegistry observationRegistry;

    public void observe() {<FILL_FUNCTION_BODY>}

}

        Observation.createNotStarted("indexObservation", this.observationRegistry)
                .lowCardinalityKeyValue("area", "cn")
                .highCardinalityKeyValue("userId", "10099")
                .observe(() -> {
                    // 执行观测时的业务逻辑
                    log.info("开始执行业务逻辑...");
                });
    
<no_super_class>