Download ArbitraryAsyncReturns.zip [22mb] INSTALL: Unzip the file. Quit VS. Double-click to install in this order: (1) Roslyn.VisualStudio.Setup.vsix, (2) Roslyn.Compilers.Extension.vsix, (3) Expre...

Proposal: arbitrary task-like types returned from async methods · Issue #7169 · dotnet/roslyn