Devyn Goetsch

Correction: I was wrong about the cause. Its not necessarily the `by` keyword.

In addition to the classes up above, do we also need to add a field to `EventSourceMapping`? Additionally, do we need an api designed for filter patterns? I don't really...

Hey @zehsor ; I dropped the ball and never responded to you. I think you're point above is fair: an expressive, fluent api is definitely preceded by a more literal...