How to use the newrelic.setIgnoreTransaction function in newrelic

queryParams.push( 'status=validAudio' );

			responseStatus = 200;
		} else {
			queryParams.push( 'status=failedAudio' );

			responseStatus = 403;
		}
	} else {
		queryParams.push( 'status=failedPost' );

		responseStatus = 500;
	}

	if(responseStatus === 403) {
		newrelic.setIgnoreTransaction(true);
		setTimeout(function() {
			res.send( responseStatus );
		}, 2000);
	} else {
		req.session.ishuman = true;
		res.send( responseStatus );
	}
};