code: def __str__(self) -> str:
      return self.__repr__()
  
imports: from __future__ import annotations
  import logging
  import os
  import threading
  from abc import ABCMeta, abstractmethod
  from enum import Enum
  from queue import Full, Queue
  from subprocess import Popen
  from typing import IO, Any, Optional
  from datalad.utils import COPY_BUFSIZE
label_desc: Use image node_id 3 for calling the TransportThread obj's underlying member method code with example usage: obj.__str__() and returns: self