class_docstr: Logger class that does nothing.
  
  This class is a dummy logger class assigned to self.logger
  when system_log=None to overwrite commands to the logger.
class_docstr_tok: ["Logger","class","that","does","nothing",".","This","class","is","a","dummy","logger","class","assigned","to","self.logger","when","system_log=None","to","overwrite","commands","to","the","logger","."]
code: def warn(*args, **kwargs):
      pass
  
imports: import logging
  import os
  import traceback
  import warnings
  from contextlib import redirect_stderr, redirect_stdout
  from typing import Callable, Optional, Union
label_desc: Use image node_id 4 for calling the DummyLogger obj's underlying member method code with example usage: obj.warn() without return types