Ability to pass options/headers when using InvokeAsync

[MichalTichy]

Is your feature request related to a problem? Please describe.

I am trying to pass metadata (e.g., userId, etc.) alongside messages in message headers. When using SendAsync or PublishAsync, I can easily pass options as method param. However, InvokeAsync does not allow this.

I've tried passing options using the WithDeliveryOptions method. The problem is that routing then does not find handlers that do not request a wrapped message (DeliveryMessage<T>).

Describe the solution you'd like
It would be helpful if InvokeAsync could accept options in the same way that SendAsync does.
Or is there any other approach that would solve my problem?

Describe alternatives you've considered

Currently, I pass the user ID using a field intended for tenancy.

Additional context

The metadata I need is processed by middleware and is not required in the handlers.

[jeremydmiller]

@MichalTichy This is going to be tedious. I think I'd like to push this off until Wolverine 4 so we can make a breaking API change to add DeliveryOptions as an optional parameter to InvokeAsync() instead of having to create umpteen overloads

[atsewell]

Ironically, I found a potential solution to my problem (no delivery options on SendAsync) and it has just been removed from the 4.0 milestone!
Any idea when this might be addressed, please?