getNameSymbol example

if (!$transports) {
            throw new LogicException(sprintf('"%s" must have at least one transport configured.', static::class));
        }

        $this->transports = $transports;
        $this->deadTransports = new \SplObjectStorage();
        $this->retryPeriod = $retryPeriod;
    }

    public function __toString(): string
    {
        return implode(' '.$this->getNameSymbol().' ', array_map('strval', $this->transports));
    }

    public function supports(MessageInterface $message): bool
    {
        foreach ($this->transports as $transport) {
            if ($transport->supports($message)) {
                return true;
            }
        }

        return false;
    }

$exception ??= new TransportException('All transports failed.');
                $exception->appendDebug(sprintf("Transport \"%s\": %s\n", $transport, $e->getDebug()));
                $this->deadTransports[$transport] = microtime(true);
            }
        }

        throw $exception ?? new TransportException('No transports found.');
    }

    public function __toString(): string
    {
        return $this->getNameSymbol().'('.implode(' ', array_map('strval', $this->transports)).')';
    }

    /** * Rotates the transport list around and returns the first instance. */
    protected function getNextTransport(): ?TransportInterface
    {
        if (-1 === $this->cursor) {
            $this->cursor = $this->getInitialCursor();
        }