presto-main/src/main/java/io/prestosql/execution/resourcegroups/InternalResourceGroup.java/InternalResourceGroup/setJmxExport
class InternalResourceGroup:    @Override
    public void setJmxExport(boolean export)
    {
        synchronized (root) {
            jmxExport = export;
        }
        jmxExportListener.accept(this, export);
    }