if (useWhitelistAdserverKeys) { // delete any un-whitelisted keys
          logInfo('Going to filter out adserver targeting keys not in the whitelist: ', whitelistAdserverKeys);
          Object.keys(adserverTargeting).forEach(function(key) { if (whitelistAdserverKeys.indexOf(key) === -1) { delete adserverTargeting[key]; } });
        }