Monolog\Logger::debug PHP Method

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

 /**
  * @param       $message
  * @param array $extra
  *
  * @return $this
  */
 public function debug($message, $extra = [])
 {
     if (getenv('DEBUG')) {
         $this->logger->debug($message, $extra);
     }
     return $this;
 }