public Integer getPromotionTier() {
        return this.promotionTier;
    }
<p>
A value that specifies the order in which an Read Replica is promoted to the primary instance after a failure of
the existing primary instance.
</p>
<p>
Default: 1
</p>
<p>
Valid Values: 0 - 15
</p>

@return A value that specifies the order in which an Read Replica is promoted to the primary instance after a
        failure of the existing primary instance. </p>
        <p>
        Default: 1
        </p>
        <p>
        Valid Values: 0 - 15
aws-java-sdk-neptune/src/main/java/com/amazonaws/services/neptune/model/CreateDBInstanceRequest.java