code: public function getMessage($attribute, $rule, $parameters)
      {
          $data = $this->fakeValidationData($attribute, $rule, $parameters);
  
          $message = $this->validator->getMessage($attribute, $rule);
          $message = $this->validator->makeReplacements($message, $attribute, $rule, $parameters);
  
          $this->validator->setData($data);
  
          return $message;
      }
docs: Replace javascript error message place-holders with actual values.
  
  @param string $attribute
  @param string $rule
  @param array  $parameters
  @return mixed