ExtensionNameLengthException example

$themes_installed = [];
    foreach ($theme_list as $key) {
      // Only process themes that are not already installed.       $installed = $extension_config->get("theme.$key") !== NULL;
      if ($installed) {
        continue;
      }

      // Throw an exception if the theme name is too long.       if (strlen($key) > DRUPAL_EXTENSION_NAME_MAX_LENGTH) {
        throw new ExtensionNameLengthException("Theme name $key is over the maximum allowed length of " . DRUPAL_EXTENSION_NAME_MAX_LENGTH . ' characters.');
      }

      // Validate default configuration of the theme. If there is existing       // configuration then stop installing.       $this->configInstaller->checkConfigurationToInstall('theme', $key);

      // The value is not used; the weight is ignored for themes currently. Do       // not check schema when saving the configuration.       $extension_config
        ->set("theme.$key", 0)
        ->save(TRUE);

      

$config_installer = \Drupal::service('config.installer');
    $sync_status = $config_installer->isSyncing();
    if ($sync_status) {
      $source_storage = $config_installer->getSourceStorage();
    }
    $modules_installed = [];
    foreach ($module_list as $module) {
      $enabled = $extension_config->get("module.$module") !== NULL;
      if (!$enabled) {
        // Throw an exception if the module name is too long.         if (strlen($module) > DRUPAL_EXTENSION_NAME_MAX_LENGTH) {
          throw new ExtensionNameLengthException("Module name '$module' is over the maximum allowed length of " . DRUPAL_EXTENSION_NAME_MAX_LENGTH . ' characters');
        }

        // Load a new config object for each iteration, otherwise changes made         // in hook_install() are not reflected in $extension_config.         $extension_config = \Drupal::configFactory()->getEditable('core.extension');

        // Check the validity of the default configuration. This will throw         // exceptions if the configuration is not valid.         $config_installer->checkConfigurationToInstall('module', $module);

        // Save this data without checking schema. This is a performance