public java.util.List<String> getSecurityGroupIds() {
        if (securityGroupIds == null) {
            securityGroupIds = new com.amazonaws.internal.SdkInternalList<String>();
        }
        return securityGroupIds;
    }
<p>
The new list of VPC security groups to be associated with the serverless cache. Populating this list means the
current VPC security groups will be removed. This security group is used to authorize traffic access for the VPC
end-point (private-link). Default = NULL - the existing list of VPC security groups is not removed.
</p>

@return The new list of VPC security groups to be associated with the serverless cache. Populating this list
        means the current VPC security groups will be removed. This security group is used to authorize traffic
        access for the VPC end-point (private-link). Default = NULL - the existing list of VPC security groups is
        not removed.
aws-java-sdk-elasticache/src/main/java/com/amazonaws/services/elasticache/model/ModifyServerlessCacheRequest.java