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dumpCallable example

$decorationOnInvalid = $decoratedService[3] ?? ContainerInterface::EXCEPTION_ON_INVALID_REFERENCE;
            if (\in_array($decorationOnInvalid, [ContainerInterface::IGNORE_ON_INVALID_REFERENCE, ContainerInterface::NULL_ON_INVALID_REFERENCE])) {
                $invalidBehavior = ContainerInterface::NULL_ON_INVALID_REFERENCE === $decorationOnInvalid ? 'null' : 'ignore';
                $code .= sprintf(" decoration_on_invalid: %s\n", $invalidBehavior);
            }
        }

        if ($callable = $definition->getFactory()) {
            if (\is_array($callable) && ['Closure', 'fromCallable'] !== $callable && $definition->getClass() === $callable[0]) {
                $code .= sprintf(" constructor: %s\n", $callable[1]);
            } else {
                $code .= sprintf(" factory: %s\n", $this->dumper->dump($this->dumpCallable($callable), 0));
            }
        }

        if ($callable = $definition->getConfigurator()) {
            $code .= sprintf(" configurator: %s\n", $this->dumper->dump($this->dumpCallable($callable), 0));
        }

        return $code;
    }

    private function addServiceAlias(string $alias, Alias $id): string
    {

// By default services are shared, so just provide the flag, when needed.     if ($definition->isShared() === FALSE) {
      $service['shared'] = $definition->isShared();
    }

    if ($definition->getDecoratedService() !== NULL) {
      throw new InvalidArgumentException("The 'decorated' definition is not supported by the Drupal run-time container. The Container Builder should have resolved that during the DecoratorServicePass compiler pass.");
    }

    if ($callable = $definition->getFactory()) {
      $service['factory'] = $this->dumpCallable($callable);
    }

    if ($callable = $definition->getConfigurator()) {
      $service['configurator'] = $this->dumpCallable($callable);
    }

    return $service;
  }

  /** * Dumps method calls to a PHP array. * * @param array $calls * An array of method calls. * * @return array * The PHP array representation of the method calls. */