public String getPackageID() {
        return this.packageID;
    }
<p>
Internal ID of the package that you want to associate with a domain. Use <code>DescribePackages</code> to find
this value.
</p>

@return Internal ID of the package that you want to associate with a domain. Use <code>DescribePackages</code> to
        find this value.
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/AssociatePackageRequest.java