public String getDBInstanceParameterGroupName() {
        return this.dBInstanceParameterGroupName;
    }
<p>
The name of the DB parameter group to apply to all instances of the DB cluster.
</p>
<note>
<p>
When you apply a parameter group using <code>DBInstanceParameterGroupName</code>, parameter changes aren't
applied during the next maintenance window but instead are applied immediately.
</p>
</note>
<p>
Default: The existing name setting
</p>
<p>
Constraints:
</p>
<ul>
<li>
<p>
The DB parameter group must be in the same DB parameter group family as the target DB cluster version.
</p>
</li>
<li>
<p>
The <code>DBInstanceParameterGroupName</code> parameter is only valid in combination with the
<code>AllowMajorVersionUpgrade</code> parameter.
</p>
</li>
</ul>

@return The name of the DB parameter group to apply to all instances of the DB cluster. </p> <note>
        <p>
        When you apply a parameter group using <code>DBInstanceParameterGroupName</code>, parameter changes
        aren't applied during the next maintenance window but instead are applied immediately.
        </p>
        </note>
        <p>
        Default: The existing name setting
        </p>
        <p>
        Constraints:
        </p>
        <ul>
        <li>
        <p>
        The DB parameter group must be in the same DB parameter group family as the target DB cluster version.
        </p>
        </li>
        <li>
        <p>
        The <code>DBInstanceParameterGroupName</code> parameter is only valid in combination with the
        <code>AllowMajorVersionUpgrade</code> parameter.
        </p>
        </li>
aws-java-sdk-neptune/src/main/java/com/amazonaws/services/neptune/model/ModifyDBClusterRequest.java