public String getDBInstanceIdentifier() {
        return this.dBInstanceIdentifier;
    }
<p>
The DB instance identifier. This value is stored as a lowercase string.
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Must match the identifier of an existing read replica DB instance.
</p>
</li>
</ul>
<p>
Example: <code>mydbinstance</code>
</p>

@return The DB instance identifier. This value is stored as a lowercase string.</p>
        <p>
        Constraints:
        </p>
        <ul>
        <li>
        <p>
        Must match the identifier of an existing read replica DB instance.
        </p>
        </li>
        </ul>
        <p>
        Example: <code>mydbinstance</code>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/PromoteReadReplicaRequest.java