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kotlinlang

It would be nice if `failResponseFn` in `ServerFilters.CatchLensFailure` get the request as an additional parameter, so you can return different type of error bodies depending on the `Accept` request header.

This is Open Source software development, so if you have any improvements, then the repo is <https://github.com/http4k/http4k|this way>, or we can send an invoice :slightly_smiling_face:

OK, starting with an issue: <https://github.com/http4k/http4k/issues/912>

And a pull request: <https://github.com/http4k/http4k/pull/913>