Connector/Logger/LoggerMiddleware.php
public function execute($command, callable $next)
    {
        $this->formatter->logCommandReceived($command);

        $returnValue = false;

        try {
            $returnValue = $next($command);

            $this->formatter->logCommandProcessed($command, $returnValue);

            return $returnValue;
        } catch (Exception $exception) {
            $this->formatter->logCommandFailed($command, $exception);
        }

        return $returnValue;
    }
public function execute($command, callable $next)
    {
        $this->formatter->logCommandReceived($command);

        $returnValue = false;

        try {
            $returnValue = $next($command);

            $this->formatter->logCommandProcessed($command, $returnValue);

            return $returnValue;
        } catch (Exception $exception) {
            $this->formatter->logCommandFailed($command, $exception);
        }

        return $returnValue;
    }
{@inheritdoc}