@Override
    public String getRequestMetricCollector() {
        MetricCollector mc = AwsSdkMetrics.getInternalMetricCollector();
        RequestMetricCollector rmc = mc == null ? null : mc.getRequestMetricCollector();
        return mc == null || rmc == RequestMetricCollector.NONE
             ? "NONE"
             : rmc.getClass().getName()
             ;
    }
Administration of AwsSdkMetrics as an MBean.
aws-java-sdk-core/src/main/java/com/amazonaws/metrics/MetricAdmin.java