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>

@return The Amazon Resource Name (ARN) of the source DB instance or DB cluster if this DB cluster is created as a
        Read Replica.
aws-java-sdk-neptune/src/main/java/com/amazonaws/services/neptune/model/CreateDBClusterRequest.java