if nic['adapter'].key?('netBIOS')
                  # https://pubs.vmware.com/vsphere-55/index.jsp#com.vmware.wssdk.apiref.doc/vim.vm.customization.IPSettings.NetBIOSMode.html
                  # Fields:
                  #   netBIOS: string matching: 'disableNetBIOS','enableNetBIOS' or 'enableNetBIOSViaDhcp' ** REQUIRED **
                  #