Add cookbook entry showing how to distinguish DBIOActions by Effect type at runtime #2968
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I've used a few variations of this method over the years, but never quite seen it documented anywhere. I'm also open to input if there's a simpler way to accomplish this.
A related but different approach that might also be worth documented is in this SO question: https://stackoverflow.com/questions/54353299/how-to-leverage-slick-effects-to-implicitly-infer-which-of-the-db-instances-to-u