--- /dev/null
+<?php
+
+namespace Drupal\workflows;
+
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\workflows\Annotation\WorkflowType;
+
+/**
+ * Provides a Workflow type plugin manager.
+ *
+ * @see \Drupal\workflows\Annotation\WorkflowType
+ * @see \Drupal\workflows\WorkflowTypeInterface
+ * @see plugin_api
+ *
+ * @internal
+ * The workflow system is currently experimental and should only be leveraged
+ * by experimental modules and development releases of contributed modules.
+ */
+class WorkflowTypeManager extends DefaultPluginManager {
+
+ /**
+ * Constructs a new class instance.
+ *
+ * @param \Traversable $namespaces
+ * An object that implements \Traversable which contains the root paths
+ * keyed by the corresponding namespace to look for plugin implementations.
+ * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
+ * Cache backend instance to use.
+ * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+ * The module handler to invoke the alter hook with.
+ */
+ public function __construct(\Traversable $namespaces, CacheBackendInterface $cache_backend, ModuleHandlerInterface $module_handler) {
+ parent::__construct('Plugin/WorkflowType', $namespaces, $module_handler, WorkflowTypeInterface::class, WorkflowType::class);
+ $this->alterInfo('workflow_type_info');
+ $this->setCacheBackend($cache_backend, 'workflow_type_info');
+ }
+
+}