public String getParameterGroupName() {
        return this.parameterGroupName;
    }
<p>
The name of a specific parameter group for which to return details. By default, details about all parameter
groups and the default parameter group are returned.
</p>

@return The name of a specific parameter group for which to return details. By default, details about all
        parameter groups and the default parameter group are returned.
aws-java-sdk-redshift/src/main/java/com/amazonaws/services/redshift/model/DescribeClusterParameterGroupsRequest.java