public void setMetricNamespace(String metricNamespace) {
        this.metricNamespace = metricNamespace;
    }
<p>
A custom namespace to contain your metric in CloudWatch. Use namespaces to group together metrics that are
similar. For more information, see <a
href="https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_concepts.html#Namespace"
>Namespaces</a>.
</p>

@param metricNamespace
       A custom namespace to contain your metric in CloudWatch. Use namespaces to group together metrics that are
       similar. For more information, see <a
       href="https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_concepts.html#Namespace"
       >Namespaces</a>.
aws-java-sdk-logs/src/main/java/com/amazonaws/services/logs/model/MetricTransformation.java