/** * Sets message for a specific key, while preserving other keys. * * @param SourceInterface $source * @param string $key * @param string $message * @param string $level */ protected function setMessage(SourceInterface $source, $key, $message, $level = LogLevel::ERROR) { $messages = $source->getMessages(); $messages[$key][$level] = $message; $source->setMessages($messages); }