code: protected function execute(InputInterface $input, OutputInterface $output)
      {
          if (!$input->isInteractive()) {
              $output->writeln('<error>This command only supports interactive execution</error>');
  
              return 1;
          }
  
          $this->writeSection('Installation');
  
          // Generate legacy siteaccess
          $legacySiteAccessGenerator = new LegacySiteAccessGenerator(
              $this->getContainer(),
              $this->questionHelper
          );
  
          $legacySiteAccessGenerator->generate($this->input, $this->output);
  
          // Generate configuration
          $configurationGenerator = new ConfigurationGenerator(
              $this->getContainer(),
              $this->questionHelper
          );
  
          $configurationGenerator->generate($this->input, $this->output);
  
          $errors = array();
          $runner = $this->getRunner($errors);
  
          // Generate legacy autoloads
          $runner($this->generateLegacyAutoloads());
  
          $this->writeInstallerSummary($errors);
  
          return 0;
      }
docs: Runs the command.
  
  @param \Symfony\Component\Console\Input\InputInterface $input
  @param \Symfony\Component\Console\Output\OutputInterface $output
  
  @return int