def METHOD_NAME(self):
    """Load settings by unpickling the settings dictionary."""
    if self._rcfile is not None and os.path.isfile(self._rcfile):
        try:
            settings = unpickle(self._rcfile)
        except Exception as err:
            if self._logger:
                self._logger.warning("{0} configuration file '{1}' "
                                     "could not be loaded ({2})."
                                     .format(self._package, self._rcfile,
                                             err))
        else:
            if isinstance(settings, dict):
                self._settings.update(settings)