public NodeGroupConfiguration withPrimaryOutpostArn(String primaryOutpostArn) {
        setPrimaryOutpostArn(primaryOutpostArn);
        return this;
    }
<p>
The outpost ARN of the primary node.
</p>

@param primaryOutpostArn
       The outpost ARN of the primary node.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-elasticache/src/main/java/com/amazonaws/services/elasticache/model/NodeGroupConfiguration.java