public void setNamespace(String namespace) {
        this.namespace = namespace;
    }
<p>
The query namespace - e.g. <code>VDM</code>
</p>

@param namespace
       The query namespace - e.g. <code>VDM</code>
@see MetricNamespace
aws-java-sdk-sesv2/src/main/java/com/amazonaws/services/simpleemailv2/model/BatchGetMetricDataQuery.java