Determine the current usage for each limit of this service,
        and update corresponding Limit via
        :py:meth:`~.AwsLimit._add_current_usage`.

def find_usage(self):
        """
        Determine the current usage for each limit of this service,
        and update corresponding Limit via
        :py:meth:`~.AwsLimit._add_current_usage`.
        """
        logger.debug("Getting usage for Lambda metrics")
        try:
            self.connect()
            resp = self.conn.get_account_settings()
        except EndpointConnectionError as ex:
            logger.warn('Skipping Lambda: %s', str(ex))
            return
        self.limits['Function Count']._add_current_usage(
            resp['AccountUsage']['FunctionCount'])
        self.limits['Total Code Size (MiB)']._add_current_usage(
            int((resp['AccountUsage']['TotalCodeSize'])/1048576))
        self._have_usage = True