You can use this parameter when paginating results. Set the value of
this parameter to null on your first call to the ListRulesPackages
action. Subsequent calls to the action fill nextToken in the request
with the value of NextToken from the previous response to continue
listing data.
maxResults
You can use this parameter to indicate the maximum number of items you
want in the response. The default value is 10. The maximum value is 500.