class_docstr: This class implements the progress bar interface but does nothing
code: def __enter__(self, *args, **kwargs):
      return self
  
file_path: emcee/src/emcee/pbar.py
imports: import logging
label_desc: Use image node_id 2 for calling the _NoOpPBar obj's underlying member method code with example usage: obj.__enter__() and returns: self