title: Ratpack Rest API ExceptionHandler
body: <p>I want to have single ExceptionHandler for handling each exception while implementing REST API using ratpack. This  ExceptionHandler will handle each runtime exception and send json response accordingly.</p>
  
  <p>Is it possible in ratpack? In Spring we do that using @ControllerAdvice annotation. I want to implement similar behaviour using ratpack.</p>
  
  <p>Thanks for helping.</p>