def set_threshold_override(self, service_name, limit_name,
                               warn_percent=None, warn_count=None,
                               crit_percent=None, crit_count=None):
        """
        Set a manual override on the threshold (used for determining
        warning/critical status) for a specific limit. See
        :py:class:`~.AwsLimitChecker` for information on Warning and
        Critical thresholds.

        See :py:meth:`.AwsLimit.set_threshold_override`.

        :param service_name: the name of the service to override limit for
        :type service_name: str
        :param limit_name: the name of the limit to override:
        :type limit_name: str
        :param warn_percent: new warning threshold, percentage used
        :type warn_percent: int
        :param warn_count: new warning threshold, actual count/number
        :type warn_count: int
        :param crit_percent: new critical threshold, percentage used
        :type crit_percent: int
        :param crit_count: new critical threshold, actual count/number
        :type crit_count: int
        """
        self.services[service_name].set_threshold_override(
            limit_name,
            warn_percent=warn_percent,
            warn_count=warn_count,
            crit_percent=crit_percent,
            crit_count=crit_count
        )