public void setSubnetId(String subnetId) {
        this.subnetId = subnetId;
    }
<p>
The identifier of the subnet that is associated with the network ACL.
</p>

@param subnetId
       The identifier of the subnet that is associated with the network ACL.
aws-java-sdk-securityhub/src/main/java/com/amazonaws/services/securityhub/model/AwsEc2NetworkAclAssociation.java