* Add passthrough example * Update example/passthrough/handler/handler.go Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com> * Update example/passthrough/README.md Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com> * Apply suggestions from code review Co-authored-by: Robert Pająk <pellared@hotmail.com> Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com> Co-authored-by: Robert Pająk <pellared@hotmail.com>  | 
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