presto-main/src/main/java/io/prestosql/execution/resourcegroups/InternalResourceGroup.java/RootInternalResourceGroup/RootInternalResourceGroup
class RootInternalResourceGroup:        public RootInternalResourceGroup(String name, BiConsumer<InternalResourceGroup, Boolean> jmxExportListener, Executor executor)
        {
            super(Optional.empty(), name, jmxExportListener, executor);
        }