class WorkflowType

class WorkflowType extends Plugin {
  
  /**
   * States required to exist.
   *
   * Normally supplied by WorkflowType::defaultConfiguration().
   */
  public array $required_states = [];
  
  /**
   * A list of optional form classes implementing PluginFormInterface.
   *
   * Forms which will be used for the workflow UI are:
   * - 'configure' (\Drupal\workflows\WorkflowTypeInterface::PLUGIN_FORM_KEY)
   * - 'state' (\Drupal\workflows\StateInterface::PLUGIN_FORM_KEY)
   * - 'transition' (\Drupal\workflows\TransitionInterface::PLUGIN_FORM_KEY)
   *
   * @see \Drupal\Core\Plugin\PluginWithFormsInterface
   * @see \Drupal\Core\Plugin\PluginFormInterface
   * @see \Drupal\workflows\Plugin\WorkflowTypeConfigureFormBase
   * @see \Drupal\workflows\Plugin\WorkflowTypeStateFormBase
   * @see \Drupal\workflows\Plugin\WorkflowTypeTransitionFormBase
   * @see \Drupal\workflows\WorkflowTypeInterface::PLUGIN_FORM_KEY
   * @see \Drupal\workflows\StateInterface::PLUGIN_FORM_KEY
   * @see \Drupal\workflows\TransitionInterface::PLUGIN_FORM_KEY
   */
  public array $forms = [];
  
  /**
   * Constructs an Action attribute.
   *
   * @param string $id
   *   The plugin ID.
   * @param \Drupal\Core\StringTranslation\TranslatableMarkup|null $label
   *   The label of the action.
   * @param string[] $forms
   *   A list of optional form classes implementing PluginFormInterface.
   * @param string[] $required_states
   *   States required to exist.
   */
  public function __construct(public readonly string $id, public readonly ?TranslatableMarkup $label = NULL, array $forms = [], array $required_states = []) {
    $this->forms = $forms;
    $this->required_states = $required_states;
  }

}