/**
* The running total latency of the ad call.
*
* @return the running total latency, -1 if `latencyStop` not set.
*/
private long getTotalLatencyParam(AdRequester requester) {
if ((requester != null) && (latencyStop > 0)) {
return requester.getLatency(latencyStop);
}
// return -1 if invalid.
return -1;
}
