code: def download_file():
      if isdir(VLSP2020_DP_SAMPLE.folder):
          return
      shutil.rmtree(VLSP2020_DP_SAMPLE.folder, ignore_errors=True)
      DataFetcher.download_zip_file_to_cache(
          VLSP2020_DP_SAMPLE.REPO_DATA
      )
  
file_path: underthesea/underthesea/datasets/vlsp2020_dp/__init__.py
imports: import shutil
  from os.path import isdir
  from underthesea.corpus import Corpus
  from underthesea.data_fetcher import DataFetcher
  from underthesea.file_utils import DATASETS_FOLDER
label_desc: Use image node_id 1 for calling the VLSP2020_DP_SAMPLE obj's underlying member method code with example usage: obj.download_file() without return types