code: def update_msg(self) -> None:
      print(" " * len(self.msg), end="\r")
      self.msg = (
          "Preparing files to send to master... "
          f"{util.sizeof_fmt(self.size)} and {len(self.items)} files"
      )
      print(self.msg, end="\r", flush=True)
  
file_path: determined/harness/determined/common/context.py
imports: import collections
  import pathlib
  from typing import Any, Dict, Iterable, List, Optional
  from determined.common import constants, detignore, util, v1file_utils
  from determined.common.api import bindings
label_desc: Use image node_id 3 for calling the _Builder obj's underlying member method code with example usage: obj.update_msg() without return types