public void addDataPoint(String app, long total, long failures, long errors) {
        ResponseStatsDataPoint point = new ResponseStatsDataPoint(null, total, failures, errors);
        data.put(app, point);
    }
@param app
@param total
@param failures
@param errors
manager/api/beans/src/main/java/io/apiman/manager/api/beans/metrics/ResponseStatsPerClientBean.java