public DisassociateSubnetsRequest withFirewallArn(String firewallArn) {
        setFirewallArn(firewallArn);
        return this;
    }
<p>
The Amazon Resource Name (ARN) of the firewall.
</p>
<p>
You must specify the ARN or the name, and you can specify both.
</p>

@param firewallArn
       The Amazon Resource Name (ARN) of the firewall.</p>
       <p>
       You must specify the ARN or the name, and you can specify both.
@return Returns a reference to this object so that method calls can be chained together.
aws-java-sdk-networkfirewall/src/main/java/com/amazonaws/services/networkfirewall/model/DisassociateSubnetsRequest.java