How to create a DragonFruit style subcommand

[tmds]

I'm using the System.CommandLine API and I'd like to add a subcommand that follows the DragonFruit conventions.
Is this possible? How can I do this?

[jonsequitur]

There are some ideas around this in #128. The binding model has gotten a lot more sophisticated since that issue was opened so experimenting with APIs should be easier.

Any suggestions on how the API should look?

[tmds]

Vaguely, I'd like to do something that looks like:

someCommand.AddCommand( System.CommandLine.DragonFruit.???.CreateCommand( ??? <handlermethod> ???)).

[jonsequitur]

I might have misunderstood the question. Which DragonFruit conventions are you referring to?

The binding conventions are identical to those used when you call CommandHandler.Create and pass a MethodInfo.

The XML documentation conventions are specific to DragonFruit but are public under System.CommandLine.DragonFruit.CommandLine.ConfigureHelpFromXmlComments.

[mungojam]

For the time being, I am using subCommand.ConfigureFromMethod() from DragonFruit as a way to achieve this. That works well with two limitations.

Do you think it's worth raising either of these separately:

1. I've had to disable the build imports from DragonFruit so that it doesn't try and replace my Main method :

    <PackageReference Include="System.CommandLine.DragonFruit" Version="0.3.0-alpha.20158.1">
      <!--A workaround to remove a multiple entry points warning in Rider-->
      <ExcludeAssets>build</ExcludeAssets>
    </PackageReference>

2. Partly because of the above, XML comments aren't picked up so the command line parameter descriptions are just the parameter names.

[mungojam]

Incidentally I did have a look at using ConfigureHelpFromXmlComments but I wasn't sure how to work with the builder parameter and my subcommands.