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kotlinlang

Just FYI, this line in `org.http4k.core.Status`:
`val clientError by lazy { CLIENT_ERROR.contains(code) || clientGenerated }`
completely failed the principle of least surprise for me.

I was blindsided by the idea that `Status.clientError` can be `true` for a `5xx`. I think it mixes two quite separate concerns: indicating where the status comes from, and indicating what the requester can do about it. The point of something being a clientError, a 4xx, is that there's no point repeating the same request without a change in server side state.

I'd much prefer the `clientGenerated` property to be public and `clientError` just to be `CLIENT_ERROR.contains(code)`.