public void setEniId(String eniId) {
        this.eniId = eniId;
    }
<p>
The resource identifier of the elastic network interface that is attached to instances in your VPC. All network
interfaces have the eni-xxxxxxxx resource identifier.
</p>

@param eniId
       The resource identifier of the elastic network interface that is attached to instances in your VPC. All
       network interfaces have the eni-xxxxxxxx resource identifier.
aws-java-sdk-appstream/src/main/java/com/amazonaws/services/appstream/model/NetworkAccessConfiguration.java