Query ELB's DescribeAccountLimits API action, and update limits
        with the quotas returned. Updates ``self.limits``.

def _update_limits_from_api(self):
        """
        Query ELB's DescribeAccountLimits API action, and update limits
        with the quotas returned. Updates ``self.limits``.
        """
        self.connect()
        logger.debug("Querying ELB DescribeAccountLimits for limits")
        attribs = self.conn.describe_account_limits()
        name_to_limits = {
            'classic-load-balancers': 'Active load balancers',
            'classic-listeners': 'Listeners per load balancer',
            'classic-registered-instances':
                'Registered instances per load balancer'
        }
        for attrib in attribs['Limits']:
            if int(attrib.get('Max', 0)) == 0:
                continue
            name = attrib.get('Name', 'unknown')
            if name not in name_to_limits:
                continue
            self.limits[name_to_limits[name]]._set_api_limit(int(attrib['Max']))
        # connect to ELBv2 API as well
        self.conn2 = client('elbv2', **self._boto3_connection_kwargs)
        logger.debug("Connected to %s in region %s",
                     'elbv2', self.conn2._client_config.region_name)
        logger.debug("Querying ELBv2 (ALB) DescribeAccountLimits for limits")
        attribs = self.conn2.describe_account_limits()
        name_to_limits = {
            'target-groups': 'Target groups',
            'listeners-per-application-load-balancer':
                'Listeners per application load balancer',
            'rules-per-application-load-balancer':
                'Rules per application load balancer',
            'network-load-balancers': 'Network load balancers',
            'listeners-per-network-load-balancer':
                'Listeners per network load balancer'
        }
        for attrib in attribs['Limits']:
            if int(attrib.get('Max', 0)) == 0:
                continue
            name = attrib.get('Name', 'unknown')
            if name not in name_to_limits:
                continue
            self.limits[name_to_limits[name]]._set_api_limit(int(attrib['Max']))
        logger.debug("Done setting limits from API")