public String getSubnetId() {
        return this.subnetId;
    }
<p>
The ID of the subnet to add the mount target in. For One Zone file systems, use the subnet that is associated
with the file system's Availability Zone.
</p>

@return The ID of the subnet to add the mount target in. For One Zone file systems, use the subnet that is
        associated with the file system's Availability Zone.
aws-java-sdk-efs/src/main/java/com/amazonaws/services/elasticfilesystem/model/CreateMountTargetRequest.java