def METHOD_NAME() -> logging.Logger:
    """Get a `logging.Logger` to stderr. It can be called whenever we wish to
    log some message. Messages can get mixed-up
    (https://docs.python.org/3.6/library/multiprocessing.html#logging), but it
    works well in most cases.
    # Returns
    logger: the `logging.Logger` object
    """
    if _new_logger():
        if mp.current_process().name == "MainProcess":
            _new_logger(logging.DEBUG)
        _set_log_formatter()
    return _LOGGER