implement a C# Interface in Python for .NET

Environment

• Pythonnet version: 2.3.0
• Python version: 3.6.5
• Operating System: Windows

Details

trying to implement a C# Interface in Python for .NET

This post exemplifies my exact problem.
https://stackoverflow.com/questions/49736531/implement-a-c-sharp-interface-in-python-for-net#

However, I found relatively few discussion and solution. Forgive me raise the issue here. :)
I am not sure if this is an intent for pythonnet not to support. If so, reasons are welcomed.
Otherwise, I find the practice (implementing an interface) is common, and so why there is no support.
My use case is, I am given a dll. The interface is defined there. I want to develop Python class that implements the interface. Without this approach viable, I foresee my developed application would then be half in C# and half in Python, which I consider ugly.

Start by reproducing the reported case with pythonnet 2.3.0, Python 3.6.5, Windows, and a DLL containing a C# interface. Read the linked Stack Overflow example and inspect the existing Python-to-.NET interop behavior to define the supported implementation path and its expected tests.