assertTrue(cbWithMetrics.getP95ResponseTime() > 0, "P95 response time should be tracked");

            SmbCircuitBreaker.CircuitBreakerMetrics metrics = cbWithMetrics.getMetrics();
            assertNotNull(metrics, "Metrics should be available");
            assertEquals(3, metrics.totalRequests(), "Should have 3 requests");

     * @return metrics snapshot
     */
    public CircuitBreakerMetrics getMetrics() {
        // Calculate time in open state
        long timeInOpen = totalTimeInOpen.get();
        if (state.get() == State.OPEN && openStateStartTime.get() > 0) {
            timeInOpen += System.currentTimeMillis() - openStateStartTime.get();
        }