code: def _replace_file(str_src, dest, str_dest, follow_symlinks):
      if op.lexists(str_dest):
          dest.unlink()
      else:
          dest.parent.mkdir(exist_ok=True, parents=True)
      copyfile(str_src, str_dest, follow_symlinks=follow_symlinks)
  
imports: import logging
  import os.path
  from shutil import copyfile
  import sys
  from datalad.interface.base import Interface
  from datalad.interface.base import build_doc, eval_results
  from datalad.support.constraints import EnsureStr, EnsureNone
  from datalad.interface.common_opts import save_message_opt
  from datalad.support.param import Parameter
  from datalad.distribution.dataset import Dataset, require_dataset
  from datalad.support.annexrepo import AnnexRepo
  from datalad.support.exceptions import CapturedException
  from datalad.utils import ensure_list, get_dataset_root, Path
  from datalad.distribution.dataset import EnsureDataset, datasetmethod, resolve_path
  from functools import lru_cache
label_desc: Use image node_id 5 for calling a global function with example usage: _replace_file(str_src, dest, str_dest, follow_symlinks) without return types