How can I assign TypeConverter to Enum in `Options`?

I've declared `Options` which will be used for parsing command line.
```csharp
public class Options {
// ...
[Option('o', "operation", HelpText = "")]
[TypeConverter(typeof(OperationConverter))]
public Operation Operation { get; set; }
}
```
And the `Operation` looks like this:
```csharp
[TypeConverter(typeof(OperationConverter))]
public enum Operation {
// ...
CreateDirectory,
// ...
}
```
Since `CreateDirectory` is quite long to type in command line, I want to allow `cd` as valid `Operation.CreateDirectory`
```csharp
public class OperationConverter : EnumConverter {
// ... candidates for other enum values
private static readonly List OperationCandidate = ["createdirectory", "cd"];

// ...
public override object ConvertFrom(ITypeDescriptorContext? ctx, CultureInfo? ci, object value) {
if (value is string s) {
string l = s.Trim().ToLowerInvariant();
// ...
if (OperationCandidate.Contains(l)) return Operation.CreateDirectory;
// ...
}
}
}
```
But I can't assign this `OperationConverter` to `Options.Operation`. I don't see anything that might be related to this.

#83 says it is resolved, but at the bottom of that issue, [someone](https://github.com/commandlineparser/commandline/issues/83#issuecomment-671916065) said:
> I dont think this works in the latest version. I tried annotating my option's property, but the converter is not invoked. Instead I had to register it using `TypeDescriptor.AddAttributes()`.

But I don't see any methods named `.AddAttributes()` in [`TypeDescriptor`](https://github.com/commandlineparser/commandline/wiki/T_CommandLine_Core_TypeDescriptor). [this](https://learn.microsoft.com/en-us/dotnet/api/system.componentmodel.typedescriptor?view=netframework-4.8.1#methods) has `.AddAttributes()`, but this doesn't seem to work.
```csharp
private static void Main(string[] args) {
// ...
TypeDescriptor.AddAttributes(typeof(Operation), new TypeConverterAttribute(typeof(OperationConverter)));
// other logic + command line parsing
}
```

Now I'm completely lost. Wiki doesn't provide any useful information that I can easily access.

How can I assign TypeConverter to Enum in Options?

Commencez par la propriété Options.Operation et l’appel à TypeDescriptor.AddAttributes, puis suivez le chemin de conversion de l’analyseur de ligne de commande afin de déterminer si des convertisseurs au niveau de la propriété ou de l’enum sont utilisés. Le travail est terminé lorsque le chemin d’enregistrement pris en charge est documenté ou corrigé afin que le convertisseur personnalisé mappe cd vers Operation.CreateDirectory.

Rédigé par le modèle d'indexation à partir du texte de l'issue.