public java.util.List<String> getVpcSecurityGroupIds() {
        if (vpcSecurityGroupIds == null) {
            vpcSecurityGroupIds = new com.amazonaws.internal.SdkInternalList<String>();
        }
        return vpcSecurityGroupIds;
    }
<p>
A list of EC2 VPC security groups to associate with this DB cluster.
</p>
<p>
Valid for Cluster Type: Aurora DB clusters and Multi-AZ DB clusters
</p>

@return A list of EC2 VPC security groups to associate with this DB cluster.</p>
        <p>
        Valid for Cluster Type: Aurora DB clusters and Multi-AZ DB clusters
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/CreateDBClusterRequest.java