clean install

web/modules/state_machine/src/WorkflowManagerInterface.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Drupal\state_machine;
+
+use Drupal\Component\Plugin\PluginManagerInterface;
+
+/**
+ * Defines the interface for workflow plugin managers.
+ */
+interface WorkflowManagerInterface extends PluginManagerInterface {
+
+  /**
+   * Gets the grouped workflow labels.
+   *
+   * @param string $entity_type_id
+   *   (optional) The entity type id to filter by. If provided, only workflows
+   *   that belong to groups with the specified entity type will be returned.
+   *
+   * @return array
+   *   Keys are group labels, and values are arrays of which the keys are
+   *   workflow IDs and the values are workflow labels.
+   */
+  public function getGroupedLabels($entity_type_id = NULL);
+
+}