function isValidInteractionXHR(oRequestTiming) {
		// if the request has been completed it has complete timing figures)
		var bComplete = oRequestTiming.startTime > 0 &&
			oRequestTiming.startTime <= oRequestTiming.requestStart &&
			oRequestTiming.requestStart <= oRequestTiming.responseEnd;

		var bPartOfInteraction = oPendingInteraction.start <= (performance.timeOrigin + oRequestTiming.requestStart) &&
			oPendingInteraction.end >= (performance.timeOrigin + oRequestTiming.responseEnd);

		return bPartOfInteraction && bComplete && oRequestTiming.initiatorType === "xmlhttprequest";
	}
Check if request is initiated by XHR, comleted and timeframe of request is within timeframe of current interaction

@param {object} oRequestTiming PerformanceResourceTiming as retrieved by performance.getEntryByType("resource")
@return {boolean} true if the request is a completed XHR with started and ended within the current interaction
@private