public void setBackupRetentionPeriod(Integer backupRetentionPeriod) {
        this.backupRetentionPeriod = backupRetentionPeriod;
    }
<p>
The number of days for which automated backups are retained. Setting this parameter to a positive number enables
backups. Setting this parameter to 0 disables automated backups.
</p>
<p>
Default: 1
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Must be a value from 0 to 35.
</p>
</li>
<li>
<p>
Can't be set to 0 if the DB instance is a source to read replicas.
</p>
</li>
</ul>

@param backupRetentionPeriod
       The number of days for which automated backups are retained. Setting this parameter to a positive number
       enables backups. Setting this parameter to 0 disables automated backups.</p>
       <p>
       Default: 1
       </p>
       <p>
       Constraints:
       </p>
       <ul>
       <li>
       <p>
       Must be a value from 0 to 35.
       </p>
       </li>
       <li>
       <p>
       Can't be set to 0 if the DB instance is a source to read replicas.
       </p>
       </li>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/PromoteReadReplicaRequest.java