public String getDBClusterIdentifier() {
        return this.dBClusterIdentifier;
    }
<p>
If the DB instance is a member of a DB cluster, contains the name of the DB cluster that the DB instance is a
member of.
</p>

@return If the DB instance is a member of a DB cluster, contains the name of the DB cluster that the DB instance
        is a member of.
aws-java-sdk-securityhub/src/main/java/com/amazonaws/services/securityhub/model/AwsRdsDbInstanceDetails.java