Creating a custom DfaGraphWriter using ImpromptuInterface for easier reflection: Visualizing ASP.NET Core 3.0 endpoints using GraphvizOnline - Part 3

In this post I lay the groundwork for creating a custom implementation of DfaGraphWriter. DfaGraphWriter is public, so you can use it in your application as I showed in my previous post, but all the classes it uses are marked internal. That makes creating your own version problematic.