public String getReplicationSourceIdentifier() {
        return this.replicationSourceIdentifier;
    }
<p>
The Amazon Resource Name (ARN) of the source DB instance or DB cluster if this DB cluster is created as a read
replica.
</p>
<p>
Valid for Cluster Type: Aurora DB clusters and Multi-AZ DB clusters
</p>

@return The Amazon Resource Name (ARN) of the source DB instance or DB cluster if this DB cluster is created as a
        read replica.</p>
        <p>
        Valid for Cluster Type: Aurora DB clusters and Multi-AZ DB clusters
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/CreateDBClusterRequest.java