public void setMetricArn(String metricArn) {
        this.metricArn = metricArn;
    }
<p>
The Amazon Resource Number (ARN) of the custom metric. For example,
<code>arn:<i>aws-partition</i>:iot:<i>region</i>:<i>accountId</i>:custommetric/<i>metricName</i> </code>
</p>

@param metricArn
       The Amazon Resource Number (ARN) of the custom metric. For example,
       <code>arn:<i>aws-partition</i>:iot:<i>region</i>:<i>accountId</i>:custommetric/<i>metricName</i> </code>
aws-java-sdk-iot/src/main/java/com/amazonaws/services/iot/model/CreateCustomMetricResult.java