public ReservedElasticsearchInstanceOffering withPaymentOption(ReservedElasticsearchInstancePaymentOption paymentOption) {
        this.paymentOption = paymentOption.toString();
        return this;
    }
<p>
Payment option for the reserved Elasticsearch instance offering
</p>

@param paymentOption
       Payment option for the reserved Elasticsearch instance offering
@return Returns a reference to this object so that method calls can be chained together.
@see ReservedElasticsearchInstancePaymentOption
aws-java-sdk-elasticsearch/src/main/java/com/amazonaws/services/elasticsearch/model/ReservedElasticsearchInstanceOffering.java