public void setReadReplicaSourceDBClusterIdentifier(String readReplicaSourceDBClusterIdentifier) {
        this.readReplicaSourceDBClusterIdentifier = readReplicaSourceDBClusterIdentifier;
    }
<p>
The identifier of the source DB cluster if this DB instance is a read replica.
</p>

@param readReplicaSourceDBClusterIdentifier
       The identifier of the source DB cluster if this DB instance is a read replica.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/DBInstance.java