public EncryptionAtRest withDataVolumeKMSKeyId(String dataVolumeKMSKeyId) {
        setDataVolumeKMSKeyId(dataVolumeKMSKeyId);
        return this;
    }
<p>
The ARN of the AWS KMS key for encrypting data at rest. If you don't specify a KMS key, MSK creates one for you
and uses it.
</p>

@param dataVolumeKMSKeyId
       <p>
       The ARN of the AWS KMS key for encrypting data at rest. If you don't specify a KMS key, MSK creates one
       for you and uses it.
       </p>
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-kafka/src/main/java/com/amazonaws/services/kafka/model/EncryptionAtRest.java