def METHOD_NAME(self, dold, dnew, prefix=""):
    """Helper to log what actually changed from old to new values of
    dictionaries.
    typical use -- log difference for hashed_inputs
    """
    from .misc import dict_diff
    self._logger.warning(
        "logdebug_dict_differences has been deprecated, please use "
        "nipype.utils.misc.dict_diff."
    )
    self._logger.debug(dict_diff(dold, dnew))