presto-main/src/main/java/io/prestosql/execution/TaskManagementExecutor.java/TaskManagementExecutor/getTaskManagementExecutor
class TaskManagementExecutor:    @Managed(description = "Task garbage collector executor")
    @Nested
    public ThreadPoolExecutorMBean getTaskManagementExecutor()
    {
        return taskManagementExecutorMBean;
    }