code: def download(self, source: str, target: str):
      fetch_dir_fom_head(source, target)
  
file_path: ray/release/ray_release/file_manager/remote_task.py
imports: import io
  import tarfile
  from typing import Optional
  from ray_release.file_manager.file_manager import FileManager
label_desc: Use image node_id 2 for calling the RemoteTaskFileManager obj's underlying member method code with example usage: obj.download(source, target) without return types