How to use the measured-core.Meter function in measured-core

getOrCreateMeter(name, dimensions, publishingIntervalInSeconds) {
    // todo validate options
    let meter;
    if (this._registry.hasMetric(name, dimensions)) {
      meter = this._registry.getMetric(name, dimensions);
    } else {
      meter = new Meter();
      const key = this._registry.putMetric(name, meter, dimensions);
      this._reporters.forEach(reporter => reporter.reportMetricOnInterval(key, publishingIntervalInSeconds));
    }

    return meter;
  }