public String getVPCId() {
        return this.vPCId;
    }
<p>
The VPC Id for the Elasticsearch domain. Exists only if the domain was created with VPCOptions.
</p>

@return The VPC Id for the Elasticsearch domain. Exists only if the domain was created with VPCOptions.
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/VPCDerivedInfo.java