public String getDBClusterParameterGroupName() {
        return this.dBClusterParameterGroupName;
    }
<p>
The name of the cluster parameter group.
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Must be the name of an existing cluster parameter group.
</p>
</li>
<li>
<p>
You can't delete a default cluster parameter group.
</p>
</li>
<li>
<p>
Cannot be associated with any clusters.
</p>
</li>
</ul>

@return The name of the cluster parameter group.</p>
        <p>
        Constraints:
        </p>
        <ul>
        <li>
        <p>
        Must be the name of an existing cluster parameter group.
        </p>
        </li>
        <li>
        <p>
        You can't delete a default cluster parameter group.
        </p>
        </li>
        <li>
        <p>
        Cannot be associated with any clusters.
        </p>
        </li>
aws-java-sdk-docdb/src/main/java/com/amazonaws/services/docdb/model/DeleteDBClusterParameterGroupRequest.java