protected function addInstance(Message $message, $type, $flash = true, $format = null)
{
$message->setType($type);
if ($message->isFlash() != $flash) {
$message->setFlash($flash);
}
if (is_null($message->getFormat())) {
$message->setFormat($this->getFormat($type));
}
if (!is_null($format)) {
$message->setFormat($this->checkFormat($format, $type));
}
}