code: function failAction (request, reply, source, error) {
    var meta = request.route.settings.validate[source].describe().meta
    var statusCode = _.get(meta, '[0].statusCode') || 400
    var message = _.get(meta, '[0].message') || error.message
  
    reply(Boom.create(statusCode, message, error.data))
  }
docs: Turns JOI route validations into corresponding Boom errors using
  Joi’s .meta method
  
  Example
  
  validate: {
  headers: Joi.object({
  authorization: Joi.string().required()
  }).unknown().required().meta({
  statusCode: 403})
  })
  }
  
  A request without an "authorization" header now gets rejected with status 403
  and the according error message coming from Joi