code: public Group withMetrics(java.util.Map<String, MetricValue> metrics) {
          setMetrics(metrics);
          return this;
      }
docs: <p>
  The metrics that are included in this group.
  </p>
  
  @param metrics
  The metrics that are included in this group.
  @return Returns a reference to this object so that method calls can be chained together.