class_docstr: Queue column.
class_docstr_tok: ["Queue","column","."]
code: def __init__(self):
      self._q = deque()
  
imports: import threading
  import copy
  from enum import Enum, auto
  from typing import List, Tuple, Union, Dict, Optional
  from collections import deque, namedtuple
label_desc: Use image node_id 1 to create a new _QueueColumn object  with example: obj = _QueueColumn()