Where is PowerShell 2.0 ICmdletProviderSupportsHelp Implemented?

It seems the System.Management.Automation assembly only ever exists in version 1.0.0.0 on my system, available in the GAC as well as in the following folder:

%ProgramFiles%\Reference Assemblies\Microsoft\WindowsPowerShell\v1.0

I can confirm that I do have PowerShell 2.0 installed, though, since I ha开发者_Python百科ve support for PowerShell modules and remoting working from the shell...

Looking through Reflector, I can observe that the ICmdletProviderSupportsHelp interface is definitely not there. So, the question is, where is it implemented?

To get the reference assemblies for the additions in PSH V2 you need a recent (V7 or later) version of the Windows SDK.

But note that these still appear as V1.x, e.g. strong name System.Management.Automation, Version=1.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35.

But the file version is 6.1.7600.16385, which is later than the reference assemblies from V1, and it does contain ICmdletProviderSupportsHelp.

(This lack of a version change seems, to me, to be down to wanting 100% forward compatibility from PSH V1: the V2 assemblies add things, but do not remove or change anything that existed for V1.)