If you specify multiple
URLs, and if you specify the RESPONSE property in the EVENT_BEGIN
CALL routine, then the response will be received and processed only
for the URL that you specified first. The event is published to the
first URL, and the response is written to the RESULT_URL location.
For all remaining URLs, the event will be published, but the EVENT_PUBLISH
CALL routine will not write the response to the RESULT_URL location.
To process results from multiple URLs, issue EVENT_PUBLISH for each
URL. Executing an EVENT_PUBLISH for each URL creates an explicit RESULT_URL
for each response.