public void setMetricArn(String metricArn) {
        this.metricArn = metricArn;
    }
<p>
The ARN of the fleet metric to describe.
</p>

@param metricArn
       The ARN of the fleet metric to describe.
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/DescribeFleetMetricResult.java