public String getDBClusterIdentifier() {
        return this.dBClusterIdentifier;
    }
<p>
The user-supplied DB cluster identifier or the Amazon Resource Name (ARN) of the DB cluster. If this parameter is
specified, information for only the specific DB cluster is returned. This parameter isn't case-sensitive.
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
If supplied, must match an existing DB cluster identifier.
</p>
</li>
</ul>

@return The user-supplied DB cluster identifier or the Amazon Resource Name (ARN) of the DB cluster. If this
        parameter is specified, information for only the specific DB cluster is returned. This parameter isn't
        case-sensitive.</p>
        <p>
        Constraints:
        </p>
        <ul>
        <li>
        <p>
        If supplied, must match an existing DB cluster identifier.
        </p>
        </li>
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/DescribeDBClustersRequest.java