public java.util.List<VpcSecurityGroupMembership> getVpcSecurityGroups() {
        if (vpcSecurityGroups == null) {
            vpcSecurityGroups = new com.amazonaws.internal.SdkInternalList<VpcSecurityGroupMembership>();
        }
        return vpcSecurityGroups;
    }
<p>
The list of Amazon EC2 VPC security groups that the DB instance belongs to.
</p>

@return The list of Amazon EC2 VPC security groups that the DB instance belongs to.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/DBInstance.java