Tool Window could not be created

Hello!

I am following articles [Create Tool Window](https://www.jetbrains.com/help/resharper/sdk/HowTo/CreateToolWindows.html?search=tool) and [Tool Windows](https://www.jetbrains.com/help/resharper/sdk/Platform/Shell/ToolWindows.html?search=tool) in a dev guide. First of all, I find it confusing to see several different approaches on creating tool windows.

Also I have a trouble creating a tool window. There are lots of examples in a [sample-resharper-plugin](https://github.com/JetBrains/sample-resharper-plugin) repository, however, there is no way to build that samples provided (because only c# source code is published).

Can you please help me with creation of tool windows - to describe it in a single way (and update docs if needed) or (it could be even better) add a real sample example of creating a tool window, not just putting some c# source code into a sample repo.

Thanks a lot in advance.