protected function callReplacer($message, $attribute, $rule, $parameters)
{
$callback = $this->replacers[$rule];
if ($callback instanceof Closure) {
return call_user_func_array($callback, func_get_args());
} elseif (is_string($callback)) {
return $this->callClassBasedReplacer($callback, $message, $attribute, $rule, $parameters);
}
}