code: function _getMiddlewareForShadowRoute (controllerId, blueprintId) {
  
          // Allow custom actions defined in controller to override blueprint actions.
          return sails.middleware.controllers[controllerId][blueprintId.toLowerCase()] || hook.middleware[blueprintId.toLowerCase()];
        }
docs: Return the middleware function that should be bound for a shadow route
  pointing to the specified blueprintId. Will use the explicit controller
  action if it exists, otherwise the blueprint action.
  
  @param  {String} controllerId
  @param  {String} blueprintId  [find, create, etc.]
  @return {Function}            [middleware]