code: def save(self, from_stream: "Stream" = None):
      if not self._file.closed:
          self._file.flush()
      super(FileStream, self).save(val)
  
file_path: tensorwatch/tensorwatch/file_stream.py
imports: from .stream import Stream
  import pickle, os
  from typing import Any
  from .None import utils
  import time
label_desc: Use image node_id 6 for calling the FileStream obj's underlying member method code with example usage: obj.save(from_stream) without return types