code: def flush(self):
      pass
  
imports: import os
  import time
  import torch
  import traceback
  from contextlib import contextmanager
  import jiant.utils.python.io
  import jiant.utils.python.filesystem
label_desc: Use image node_id 6 for calling the InMemoryZLogger obj's underlying member method code with example usage: obj.flush() without return types