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describeInputDefinition example

$this->writeText('<comment>Usage:</comment>', $options);
        foreach (array_merge([$command->getSynopsis(true)], $command->getAliases(), $command->getUsages()) as $usage) {
            $this->writeText("\n");
            $this->writeText(' '.OutputFormatter::escape($usage), $options);
        }
        $this->writeText("\n");

        $definition = $command->getDefinition();
        if ($definition->getOptions() || $definition->getArguments()) {
            $this->writeText("\n");
            $this->describeInputDefinition($definition, $options);
            $this->writeText("\n");
        }

        $help = $command->getProcessedHelp();
        if ($help && $help !== $description) {
            $this->writeText("\n");
            $this->writeText('<comment>Help:</comment>', $options);
            $this->writeText("\n");
            $this->writeText(' '.str_replace("\n", "\n ", $help), $options);
            $this->writeText("\n");
        }
    }

array_reduce(array_merge([$command->getSynopsis()], $command->getAliases(), $command->getUsages()), fn ($carry, $usage) => $carry.'* `'.$usage.'`'."\n")
        );

        if ($help = $command->getProcessedHelp()) {
            $this->write("\n");
            $this->write($help);
        }

        $definition = $command->getDefinition();
        if ($definition->getOptions() || $definition->getArguments()) {
            $this->write("\n\n");
            $this->describeInputDefinition($definition);
        }
    }

    protected function describeApplication(Application $application, array $options = []): void
    {
        $describedNamespace = $options['namespace'] ?? null;
        $description = new ApplicationDescription($application, $describedNamespace);
        $title = $this->getApplicationTitle($application);

        $this->write($title."\n".str_repeat('=', Helper::width($title)));

array_reduce(array_merge([$command->getSynopsis()], $command->getAliases(), $command->getUsages()), static fn ($carry, $usage) => $carry.'- ``'.$usage.'``'."\n")
        );

        if ($help = $command->getProcessedHelp()) {
            $this->write("\n");
            $this->write($help);
        }

        $definition = $command->getDefinition();
        if ($definition->getOptions() || $definition->getArguments()) {
            $this->write("\n\n");
            $this->describeInputDefinition($definition);
        }
    }

    protected function describeApplication(Application $application, array $options = []): void
    {
        $description = new ApplicationDescription($application, $options['namespace'] ?? null);
        $title = $this->getApplicationTitle($application);

        $this->write($title."\n".str_repeat($this->partChar, Helper::width($title)));
        $this->createTableOfContents($description, $application);
        $this->describeCommands($application, $options);
    }

abstract class Descriptor implements DescriptorInterface
{
    protected OutputInterface $output;

    public function describe(OutputInterface $output, object $object, array $options = []): void
    {
        $this->output = $output;

        match (true) {
            $object instanceof InputArgument => $this->describeInputArgument($object, $options),
            $object instanceof InputOption => $this->describeInputOption($object, $options),
            $object instanceof InputDefinition => $this->describeInputDefinition($object, $options),
            $object instanceof Command => $this->describeCommand($object, $options),
            $object instanceof Application => $this->describeApplication($object, $options),
            default => throw new InvalidArgumentException(sprintf('Object of type "%s" is not describable.', get_debug_type($object))),
        };
    }

    protected function write(string $content, bool $decorated = false): void
    {
        $this->output->write($content, false, $decorated ? OutputInterface::OUTPUT_NORMAL : OutputInterface::OUTPUT_RAW);
    }