docs: def add_stream_handler(logger, stream):
      """Add a brace-handler stream-handler using `stream` to `logger`."""
      handler = logging.StreamHandler(stream=stream)
      # Using Brace Formatter (see
      # https://docs.python.org/3.5/howto/logging-cookbook.html#use-of-alternative-formatting-styles)
      formatter = logging.Formatter(
          '{asctime} {name:24s} {levelname:8s} {message}', style='{')
      handler.setFormatter(formatter)
      logger.addHandler(handler)