+<?php
+
+namespace Drupal\libraries\ExternalLibrary\Version;
+
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\libraries\Annotation\VersionDetector;
+
+/**
+ * Provides a plugin manager for library version detector plugins.
+ *
+ * @see \Drupal\libraries\ExternalLibrary\Version\VersionDetectorInterface
+ */
+class VersionDetectorManager extends DefaultPluginManager {
+
+ /**
+ * Constructs a version detector manager.
+ *
+ * @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/libraries/VersionDetector', $namespaces, $module_handler, VersionDetectorInterface::class, VersionDetector::class);
+ $this->alterInfo('libraries_version_detector_info');
+ $this->setCacheBackend($cache_backend, 'libraries_version_detector_info');
+ }
+
+}