class EntityCloneExtrasPermissions

class EntityCloneExtrasPermissions implements ContainerInjectionInterface {
    
    /**
     * The entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface
     */
    protected $entityTypeManager;
    
    /**
     * The string translation manager.
     *
     * @var \Drupal\Core\StringTranslation\TranslationManager
     */
    protected $translationManager;
    
    /**
     * Module Handler.
     *
     * @var \Drupal\Core\Extension\ModuleHandlerInterface
     */
    protected $moduleHandler;
    
    /**
     * Constructs a new EntityCloneExtrasPermissions instance.
     *
     * @param \Drupal\Core\Entity\EntityTypeManagerInterface $entity_manager
     *   The entity type manager.
     * @param \Drupal\Core\StringTranslation\TranslationManager $string_translation
     *   The string translation manager.
     * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
     *   Module handler.
     */
    public function __construct(EntityTypeManagerInterface $entity_manager, TranslationManager $string_translation, ModuleHandlerInterface $module_handler) {
        $this->entityTypeManager = $entity_manager;
        $this->translationManager = $string_translation;
        $this->moduleHandler = $module_handler;
    }
    
    /**
     * {@inheritdoc}
     */
    public static function create(ContainerInterface $container) {
        return new static($container->get('entity_type.manager'), $container->get('string_translation'), $container->get('module_handler'));
    }
    
    /**
     * Returns an array of entity_clone_extras permissions.
     *
     * @return array
     *   The permission list.
     */
    public function permissions() {
        $permissions = [];
        // Fetch all available content types.
        $content_types = $this->entityTypeManager
            ->getStorage('node_type')
            ->loadMultiple();
        foreach ($content_types as $key => $type) {
            // Add a permission to clone each content type.
            $permissions['clone ' . $key . ' node entities'] = $this->translationManager
                ->translate('Clone all <em>@label</em> node entities', [
                '@label' => $type->label(),
            ]);
        }
        // Support media entities when media module is installed.
        if ($this->moduleHandler
            ->moduleExists('media')) {
            // Fetch all available media types.
            $media_types = $this->entityTypeManager
                ->getStorage('media_type')
                ->loadMultiple();
            foreach ($media_types as $key => $type) {
                // Add a permission to clone each media type.
                $permissions['clone ' . $key . ' media entities'] = $this->translationManager
                    ->translate('Clone all <em>@label</em> media entities', [
                    '@label' => $type->label(),
                ]);
            }
        }
        return $permissions;
    }

}