public java.util.List<String> getVpcSubnetIds() {
        if (vpcSubnetIds == null) {
            vpcSubnetIds = new com.amazonaws.internal.SdkInternalList<String>();
        }
        return vpcSubnetIds;
    }
<p>
The EC2 subnet IDs for the DB proxy endpoint.
</p>

@return The EC2 subnet IDs for the DB proxy endpoint.
aws-java-sdk-rds/src/main/java/com/amazonaws/services/rds/model/DBProxyEndpoint.java