--- /dev/null
+{% extends "base/class.php.twig" %}
+
+{% block file_path %}
+\Drupal\{{ module }}\{{ plugin_class }}Manager.
+{% endblock %}
+
+{% block namespace_class %}
+namespace Drupal\{{ module }};
+{% endblock %}
+
+{% block use_class %}
+use Drupal\Component\Plugin\Exception\PluginException;
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\Core\Plugin\Discovery\ContainerDerivativeDiscoveryDecorator;
+use Drupal\Core\Plugin\Discovery\YamlDiscovery;
+{% endblock %}
+
+{% block class_declaration %}
+/**
+ * Provides the default {{ plugin_name }} manager.
+ */
+class {{ plugin_class }}Manager extends DefaultPluginManager implements {{ plugin_class }}ManagerInterface {% endblock %}
+{% block class_methods %}
+ /**
+ * Provides default values for all {{ plugin_name }} plugins.
+ *
+ * @var array
+ */
+ protected $defaults = array(
+ // Add required and optional plugin properties.
+ 'id' => '',
+ 'label' => '',
+ );
+
+ /**
+ * Constructs a {{ plugin_class }}Manager object.
+ *
+ * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+ * The module handler.
+ * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
+ * Cache backend instance to use.
+ */
+ public function __construct(ModuleHandlerInterface $module_handler, CacheBackendInterface $cache_backend) {
+ // Add more services as required.
+ $this->moduleHandler = $module_handler;
+ $this->setCacheBackend($cache_backend, '{{ plugin_name }}', array('{{ plugin_name }}'));
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ protected function getDiscovery() {
+ if (!isset($this->discovery)) {
+ $this->discovery = new YamlDiscovery('{{ plugin_file_name }}', $this->moduleHandler->getModuleDirectories());
+ $this->discovery->addTranslatableProperty('label', 'label_context');
+ $this->discovery = new ContainerDerivativeDiscoveryDecorator($this->discovery);
+ }
+ return $this->discovery;
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function processDefinition(&$definition, $plugin_id) {
+ parent::processDefinition($definition, $plugin_id);
+
+ // You can add validation of the plugin definition here.
+ if (empty($definition['id'])) {
+ throw new PluginException(sprintf('Example plugin property (%s) definition "is" is required.', $plugin_id));
+ }
+ }
+
+ // Add other methods here as defined in the {{ plugin_class }}ManagerInterface.
+{% endblock %}