Unknown attachable member 'ListViewExtensions.Command' on element 'ListView'

[antokhio]

Describe the bug

https://docs.microsoft.com/en-us/windows/communitytoolkit/extensions/listviewextensions
this page states command extension for list view, but all i get is
Unknown attachable member 'ListViewExtensions.Command' on element 'ListView'

https://stackoverflow.com/questions/59301716/unknown-attachable-member-listviewextensions-command-on-element-listview

also seems missing on https://github.com/windows-toolkit/WindowsCommunityToolkit/blob/master/Microsoft.Toolkit.Uwp.UI/Extensions/ListViewBase/ListViewExtensions.cs

• Is this bug a regression in the toolkit? If so, what toolkit version did you last see it work:

Steps to Reproduce

Steps to reproduce the behavior:


<ListView ... extensions:ListViewExtensions.Command= < error

Expected behavior

Command added

Screenshots

If applicable, add screenshots to help explain your problem.

Environment

NuGet Package(s): 
Microsoft.Toolkit 6.0.0
Package Version(s): 

Windows 10 Build Number:
- [ ] Fall Creators Update (16299)
- [ ] April 2018 Update (17134)
- [ ] October 2018 Update (17763)
- [*] May 2019 Update (18362)
- [ ] Insider Build (build number: )

App min and target version:
- [ ] Fall Creators Update (16299)
- [ ] April 2018 Update (17134)
- [ ] October 2018 Update (17763)
- [*] May 2019 Update (18362)
- [ ] Insider Build (xxxxx)

Device form factor:
- [*] Desktop
- [ ] Xbox
- [ ] Surface Hub
- [ ] IoT

Visual Studio 
- [ ] 2017 (version: )
- [*] 2019 (version: 16.4.0) 
- [ ] 2019 Preview (version: )

Additional context

Add any other context about the problem here.

[deanchalk]

I dont mind taking a look at this one if you assign it to me - thanks

[deanchalk]

Well, having a look I can see that ListViewExtensions never had a Command attached property declared (I had a look at the git history). Could this be a mistake on the documentation side ?
I'd happily implement the missing code if thats the right way forward :)