Currently validation in Finch is based on predicate functions, causing further a NonValid error to be thrown without a chance to add details to it in order to help people to correct it...
https://finagle.github.io/finch/user-guide.html#validation

One might of course throw his own typed exceptions from these boolean preicates but that would be a misusing of the initially supposed way. Is there any more elegant solutions for approaching that? Thanks.