vsphere/internal/helper/envbrowse/environment_browser_helper.go
func (b *EnvironmentBrowser) DefaultDevices(ctx context.Context, key string, host *object.HostSystem) (object.VirtualDeviceList, error) {
	var eb mo.EnvironmentBrowser

	err := b.Properties(ctx, b.Reference(), nil, &eb)
	if err != nil {
		return nil, err
	}

	req := types.QueryConfigOption{
		This: b.Reference(),
		Key:  key,
	}
	if host != nil {
		ref := host.Reference()
		req.Host = &ref
	}
	res, err := methods.QueryConfigOption(ctx, b.Client(), &req)
	if err != nil {
		return nil, err
	}
	if res.Returnval == nil {
		return nil, errors.New("no config options were found for the supplied criteria")
	}
	return object.VirtualDeviceList(res.Returnval.DefaultDevice), nil
}
func (b *EnvironmentBrowser) DefaultDevices(ctx context.Context, key string, host *object.HostSystem) (object.VirtualDeviceList, error) {
	var eb mo.EnvironmentBrowser

	err := b.Properties(ctx, b.Reference(), nil, &eb)
	if err != nil {
		return nil, err
	}

	req := types.QueryConfigOption{
		This: b.Reference(),
		Key:  key,
	}
	if host != nil {
		ref := host.Reference()
		req.Host = &ref
	}
	res, err := methods.QueryConfigOption(ctx, b.Client(), &req)
	if err != nil {
		return nil, err
	}
	if res.Returnval == nil {
		return nil, errors.New("no config options were found for the supplied criteria")
	}
	return object.VirtualDeviceList(res.Returnval.DefaultDevice), nil
}
// DefaultDevices loads a satisfactory default device list for the optionally
// supplied host and descriptor key. The result is returned as a higher-level
// VirtualDeviceList object. This can be used as an initial VirtualDeviceList
// when building a device list and VirtualDeviceConfigSpec list for new virtual
// machines.
//
// Appropriate options for key can be loaded by running
// QueryConfigOptionDescriptor, which will return a list of
// VirtualMachineConfigOptionDescriptor which will contain the appropriate key
// for the virtual machine version needed. If no key is supplied, the results
// generally reflect the most recent VM hardware version.