public Boolean isAllowsVpcAndNonVpcInstanceMemberships() {
        return this.allowsVpcAndNonVpcInstanceMemberships;
    }
<p>
Indicates whether this option group can be applied to both VPC and non-VPC instances. The value <code>true</code>
indicates the option group can be applied to both VPC and non-VPC instances.
</p>

@return Indicates whether this option group can be applied to both VPC and non-VPC instances. The value
        <code>true</code> indicates the option group can be applied to both VPC and non-VPC instances.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/OptionGroup.java