code: def stream_to_file(self, stream_path, file_path):
      cmd = [_STREAM_TO_FILE, "<", stream_path, ">", file_path]
      self.run_shell_command(cmd)
  
imports: import contextlib
  import functools
  import os
  import subprocess
  from .None import cdata
  from .tester import Tester, CDataExporter, CDataImporter
  from .util import run_cmd, log
  from ..utils.source import ARROW_ROOT_DEFAULT
label_desc: Use image node_id 4 for calling the RustTester obj's underlying member method code with example usage: obj.stream_to_file(stream_path, file_path) without return types