it creates a Custom Specification for reconfigure the VM. and this custom spec creates 2 nic one of them with static connection and the other nic is eth1 and it uses DHCP

ApplyCustomSpec.js

 // VMware vRealize Orchestrator action sample
// vRA 8.8.0
//It creates 2 nic one of them with static connection and the other nic is eth1 and it uses DHCP
//so therefore i am connecting the machine after this action has deployed and change its value inside.


//action input type:  VM vc:virtual machine
                      guestNetInfoDNSServerList  Array string
                      guestNetInfoDNSSuffixList  Array string
                      guestNetInfoDomain         string
                      guestNetInfoNIC0Gateways   string
                      guestNetInfoNIC0mask       string
                      guestNetInfoNIC0IPAddress  string
                      guestNetInfoNIC0MACAddress string
                      guestNetInfoNIC1Gateways   string
                      guestNetInfoNIC1mask       stirng
                      hostname                   string
                      
//action return type: void
  
  var spec = new VcCustomizationSpec();
  spec.options = new VcCustomizationLinuxOptions();
  
  //check if the OS is Windows??
  if (System.getModule("com.vmware.library.vc.vm.os").isWindowsOsInVm(vm)) {
                  var opts = new VcCustomizationWinOptions();
                  opts.changeSID = true;
                  spec.options = opts;
  }
  
  spec.encryptionKey = null;
  spec.globalIPSettings = new VcCustomizationGlobalIPSettings();
  spec.globalIPSettings.dnsServerList = guestNetInfoDNSServerList;
  spec.globalIPSettings.dnsSuffixList = guestNetInfoDNSSuffixList;
  spec.identity = new VcCustomizationLinuxPrep();
  spec.identity.domain = guestNetInfoDomain
  spec.identity.hostName = new VcCustomizationFixedName();
  spec.identity.hostName.name = hostname;
  spec.identity.hwClockUTC = false;
  spec.identity.timeZone = null;
  var nicSettingMap = [];
  
  // NIC0 for static connection
  var nic0AdapterMapping = new VcCustomizationAdapterMapping();
  nic0AdapterMapping.adapter = new VcCustomizationIPSettings();
  nic0AdapterMapping.adapter.gateway = guestNetInfoNIC0Gateways;
  nic0AdapterMapping.adapter.subnetMask = guestNetInfoNIC0mask;
  nic0AdapterMapping.adapter.ip = new VcCustomizationFixedIp();
  nic0AdapterMapping.adapter.ip.ipAddress = guestNetInfoNIC0IPAddress;
  nic0AdapterMapping.macAddress = guestNetInfoNIC0MACAddress;
  nicSettingMap.push(nic0AdapterMapping);
  //NIC1 for dhcp connection
  var nic1AdapterMapping = new VcCustomizationAdapterMapping();
  nic1AdapterMapping.adapter = new VcCustomizationIPSettings();
  nic1AdapterMapping.adapter.gateway = guestNetInfoNIC0Gateways;
  nic1AdapterMapping.adapter.subnetMask = "255.255.255.255";
  nic1AdapterMapping.adapter.ip = new VcCustomizationFixedIp();
  nic1AdapterMapping.adapter.ip.ipAddress = "1.1.1.1";
  nic1AdapterMapping.macAddress = null;
  
  nicSettingMap.push(nic1AdapterMapping);
  spec.nicSettingMap = nicSettingMap;
  
  System.log("ApplyCustomSpecsTask", "Executing customization task...");
  System.log("SPEC " + spec);
  var task = vm.customizeVM_Task(spec);
  System.getModule("com.vmware.library.vc.basic").vim3WaitTaskEnd(task, true, 5);
  System.log("ApplyCustomSpecsTask", "Customization task finished successfully.");