public NetworkFirewallUnexpectedFirewallRoutesViolation withFirewallSubnetId(String firewallSubnetId) {
        setFirewallSubnetId(firewallSubnetId);
        return this;
    }
<p>
The subnet ID for the firewall.
</p>

@param firewallSubnetId
       The subnet ID for the firewall.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-fms/src/main/java/com/amazonaws/services/fms/model/NetworkFirewallUnexpectedFirewallRoutesViolation.java