public Boolean isSubnetChangeProtection() {
        return this.subnetChangeProtection;
    }
<p>
A setting indicating whether the firewall is protected against changes to the subnet associations. Use this
setting to protect against accidentally modifying the subnet associations for a firewall that is in use. When you
create a firewall, the operation initializes this setting to <code>TRUE</code>.
</p>

@return A setting indicating whether the firewall is protected against changes to the subnet associations. Use
        this setting to protect against accidentally modifying the subnet associations for a firewall that is in
        use. When you create a firewall, the operation initializes this setting to <code>TRUE</code>.
aws-java-sdk-networkfirewall/src/main/java/com/amazonaws/services/networkfirewall/model/UpdateSubnetChangeProtectionRequest.java