Monolog\Logger::addWarning PHP Method

    public function addWarning($message, array $context = array())
    {
        return $this->addRecord(self::WARNING, $message, $context);
    }

 protected function writeEntry($level, $message, $indent, $category = "", $additionalData = [])
 {
     $message = str_pad($category, 16, " ", STR_PAD_RIGHT) . "\t" . str_repeat("  ", $indent) . $message;
     switch ($level) {
         case Log::BULK_DATA_LEVEL:
             $this->logger->addDebug($message, $additionalData);
             break;
         case Log::DEBUG_LEVEL:
             $this->logger->addDebug($message, $additionalData);
             break;
         case Log::ERROR_LEVEL:
             $this->logger->addError($message, $additionalData);
             break;
         case Log::PERFORMANCE_LEVEL:
             $this->logger->addNotice($message, $additionalData);
             break;
         case Log::WARNING_LEVEL:
             $this->logger->addWarning($message, $additionalData);
             break;
         case Log::REPOSITORY_LEVEL:
             $this->logger->addNotice($message, $additionalData);
             break;
         default:
             $this->logger->addNotice($message, $additionalData);
     }
 }