public String getDBInstanceIdentifier() {
        return this.dBInstanceIdentifier;
    }
<p>
The user-supplied database identifier. This identifier is the unique key that identifies a DB instance.
</p>

@return The user-supplied database identifier. This identifier is the unique key that identifies a DB instance.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/DBInstance.java