code: def file_to_stream(self, file_path, stream_path):
      cmd = [_EXE_PATH]
      cmd.extend(["--mode", "file-to-stream"])
      cmd.extend(["-a", file_path, ">", stream_path])
      self.run_shell_command(cmd)
  
imports: from contextlib import contextmanager
  import os
  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 5 for calling the CSharpTester obj's underlying member method code with example usage: obj.file_to_stream(file_path, stream_path) without return types