public String getTargetDBClusterParameterGroupIdentifier() {
        return this.targetDBClusterParameterGroupIdentifier;
    }
<p>
The identifier for the copied DB cluster parameter group.
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Cannot be null, empty, or blank
</p>
</li>
<li>
<p>
Must contain from 1 to 255 letters, numbers, or hyphens
</p>
</li>
<li>
<p>
First character must be a letter
</p>
</li>
<li>
<p>
Cannot end with a hyphen or contain two consecutive hyphens
</p>
</li>
</ul>
<p>
Example: <code>my-cluster-param-group1</code>
</p>

@return The identifier for the copied DB cluster parameter group.</p>
        <p>
        Constraints:
        </p>
        <ul>
        <li>
        <p>
        Cannot be null, empty, or blank
        </p>
        </li>
        <li>
        <p>
        Must contain from 1 to 255 letters, numbers, or hyphens
        </p>
        </li>
        <li>
        <p>
        First character must be a letter
        </p>
        </li>
        <li>
        <p>
        Cannot end with a hyphen or contain two consecutive hyphens
        </p>
        </li>
        </ul>
        <p>
        Example: <code>my-cluster-param-group1</code>
aws-java-sdk-neptune/src/main/java/com/amazonaws/services/neptune/model/CopyDBClusterParameterGroupRequest.java