Connector/CleanupService/CallbackLogHandler/CallbackLogHandler.php
protected function write(array $record)
    {
        if ($this->isProcessing) {
            return;
        }

        $this->isProcessing = true;
        call_user_func($this->handler, $record);
        $this->isProcessing = false;
    }
protected function write(array $record)
    {
        if ($this->isProcessing) {
            return;
        }

        $this->isProcessing = true;
        call_user_func($this->handler, $record);
        $this->isProcessing = false;
    }
{@inheritdoc}