class_docstr: Manages a single virtual progress bar on the driver.
  
  The actual position of individual bars is calculated as (pos_offset + position),
  where `pos_offset` is the position offset determined by the BarManager.
class_docstr_tok: ["Manages","a","single","virtual","progress","bar","on","the","driver",".","The","actual","position","of","individual","bars","is","calculated","as","(","pos_offset","+","position",")",",","where","`","pos_offset","`","is","the","position","offset","determined","by","the","BarManager","."]
docstr: The progress bar has been closed.
docstr_tok: ["The","progress","bar","has","been","closed","."]
code: def close(self):
      """The progress bar has been closed."""
      self.bar.close()
  
imports: import builtins
  import copy
  import json
  import logging
  import os
  import sys
  import threading
  import time
  import uuid
  from typing import Any, Dict, Iterable, Optional
  import colorama
  import ray
  from ray._private.ray_constants import env_bool
  from ray.util.debug import log_once
label_desc: Use image node_id 3 for calling the _Bar obj's underlying member method code with example usage: obj.close() without return types