class_docstr: Special boolean flag that displays usage and raises SystemExit.
code: def __init__(self):
      super().__init__(
          self.NAME, False, "show this help", short_name=self.SHORT_NAME
      )
  
file_path: tensorboard/tensorboard/compat/tensorflow_stub/app.py
imports: import errno
  import sys
  from .None import flags
label_desc: Use image node_id 1 to create a new _HelpFlag object from inherited base classes: flags with example: obj = _HelpFlag()