UWP and FullTrustProcessLauncher missing in namaspeace - powershell

Question

I am trying to launch powershell (some lightweight commands that all user can do) command from UWP application using FullTrustProcessLauncher.
Problem is I am getting that this name does not exists in current context.
My manifest is largly default so it looks like :
<?xml version="1.0" encoding="utf-8"?>
<Package
xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
IgnorableNamespaces="uap mp">
<Dependencies>
<TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.0.0" MaxVersionTested="10.0.0.0" />
</Dependencies>
<Resources>
<Resource Language="x-generate"/>
</Resources>
<Applications>
<Application Id="App" Executable="$targetnametoken$.exe" EntryPoint="PrototypeProject.App">
<Extensions>
<desktop:Extension Category="windows.fullTrustProcess" Executable="powershell.exe">
<desktop:FullTrustProcess>
<desktop:ParameterGroup GroupId="TestGroup" Parameters="ls"/>
</desktop:FullTrustProcess>
</desktop:Extension>
</Extensions>
</Application>
</Applications>
<Capabilities>
<Capability Name="internetClient" />
<rescap:Capability Name="runFullTrust"/>
</Capabilities>
</Package>
And class I am trying to call it from looks like:
using Windows.ApplicationModel;
using Windows.Foundation;
namespace FullTrustProcess
{
public class Ftp
{
public const string FtpParamGroupId = "TestGroup";
public void RunFtp()
{
IAsyncAction operation = FullTrustProcessLauncher.LaunchFullTrustProcessForCurrentAppAsync(FtpParamGroupId);
}
}
}
Now am I missing something??

Answer 1

It looks like I was missing - Windows Desktop Extensions for the UWP, in extensions reference