presto-main/src/main/java/io/prestosql/execution/scheduler/NodeSchedulerExporter.java/NodeSchedulerExporter/destroy
class NodeSchedulerExporter:    @PreDestroy
    public synchronized void destroy()
    {
        for (MBeanExport mbeanExport : mbeanExports) {
            try {
                mbeanExport.unexport();
            }
            catch (JmxException e) {
                // ignored
            }
        }
        mbeanExports.clear();
    }