docs: @BetaApi
    public final Operation patchFirewall(
        ProjectGlobalFirewallName firewall, Firewall firewallResource, List<String> fieldMask) {
  
      PatchFirewallHttpRequest request =
          PatchFirewallHttpRequest.newBuilder()
              .setFirewall(firewall == null ? null : firewall.toString())
              .setFirewallResource(firewallResource)
              .addAllFieldMask(fieldMask)
              .build();
      return patchFirewall(request);
    }