public Boolean isUnlimited() {
        return this.unlimited;
    }
<p>
If set to true, the data is stored indefinitely in the warm tier.
</p>

@return If set to true, the data is stored indefinitely in the warm tier.
aws-java-sdk-iotsitewise/src/main/java/com/amazonaws/services/iotsitewise/model/WarmTierRetentionPeriod.java