It's also why we put it in GitHub, so it could live alongside the code examples :)
A lot of resources show a snippet of code, followed by an impenetrable paragraph that tries to explain multiple concepts from the snippet all at once. Maybe that works for others, but for me it makes it impossible to parse and overwhelms me, so nothing sticks.
I get you don't want to clutter the point, but start with a link to working code or an article that explains the basics.
I would be happy if more articles/docs explained how this code is being called.