using util::JsonOutStream** Return from Handler methods to send a JSON response to the client.**** This is purposely a concrete final class so there's no ambiguity as to what it is. For example, ** if a handler returned an Obj that was both a 'TextResult' and a "JsonResult' what is BedSheet ** supposed to do? ** ** Best practice is to have your Entities have a 'toText()' or 'toJson()' method and return that.** ** pre>** Obj myHandler(MyEntity entity) {** ...** return entity.toJson** }** <pre finalclass JsonResult {private Obj jsonObj** The jsonObj should be serialisable into Json via `JsonOutStream`new make(Obj jsonObj){this.jsonObj = jsonObj}** Converts the wrapped Obj into JSON via `JsonOutStream.writeJsonToStr` Str toJsonStr(){ JsonOutStream.writeJsonToStr(jsonObj)}}