public String getParameterGroupName() {
        return this.parameterGroupName;
    }
<p>
The name of the cluster parameter group.
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
Must be 1 to 255 alphanumeric characters 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>
<li>
<p>
Must be unique withing your Amazon Web Services account.
</p>
</li>
</ul>
<note>
<p>
This value is stored as a lower-case string.
</p>
</note>

@return The name of the cluster parameter group.</p>
        <p>
        Constraints:
        </p>
        <ul>
        <li>
        <p>
        Must be 1 to 255 alphanumeric characters 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>
        <li>
        <p>
        Must be unique withing your Amazon Web Services account.
        </p>
        </li>
        </ul>
        <note>
        <p>
        This value is stored as a lower-case string.
        </p>
aws-java-sdk-redshift/src/main/java/com/amazonaws/services/redshift/model/CreateClusterParameterGroupRequest.java