@Override
    public DBInstance promoteReadReplica(PromoteReadReplicaRequest request) {
        request = beforeClientExecution(request);
        return executePromoteReadReplica(request);
    }
<p>
Promotes a read replica DB instance to a standalone DB instance.
</p>
<note>
<ul>
<li>
<p>
Backup duration is a function of the amount of changes to the database since the previous backup. If you plan to
promote a read replica to a standalone instance, we recommend that you enable backups and complete at least one
backup prior to promotion. In addition, a read replica cannot be promoted to a standalone instance when it is in
the <code>backing-up</code> status. If you have enabled backups on your read replica, configure the automated
backup window so that daily backups do not interfere with read replica promotion.
</p>
</li>
<li>
<p>
This command doesn't apply to Aurora MySQL, Aurora PostgreSQL, or RDS Custom.
</p>
</li>
</ul>
</note>

@param promoteReadReplicaRequest
@return Result of the PromoteReadReplica operation returned by the service.
@throws InvalidDBInstanceStateException
        The DB instance isn't in a valid state.
@throws DBInstanceNotFoundException
        <code>DBInstanceIdentifier</code> doesn't refer to an existing DB instance.
@sample AmazonRDS.PromoteReadReplica
@see <a href="http://docs.aws.amazon.com/goto/WebAPI/rds-2014-10-31/PromoteReadReplica" target="_top">AWS API
     Documentation</a>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/AmazonRDSClient.java