Update Composer, update everything

vendor/chi-teck/drupal-code-generator/templates/d8/plugin-manager/hook/model.module.twig

@@ -0,0 +1,17 @@
+/**
+ * Implements hook_{{ plugin_type }}_info().
+ */
+function {{ machine_name }}_{{ plugin_type }}_info() {
+  return [
+    'foo' => [
+      'id' => 'foo',
+      'label' => t('Foo'),
+      'description' => t('Foo description.'),
+    ],
+    'bar' => [
+      'id' => 'bar',
+      'label' => t('Bar'),
+      'description' => t('Bar description.'),
+    ],
+  ];
+}

vendor/chi-teck/drupal-code-generator/templates/d8/plugin-manager/hook/model.services.yml.twig

@@ -0,0 +1,4 @@
+services:
+  plugin.manager.{{ plugin_type }}:
+    class: Drupal\{{ machine_name }}\{{ class_prefix }}PluginManager
+    arguments: ['@module_handler', '@cache.discovery']

vendor/chi-teck/drupal-code-generator/templates/d8/plugin-manager/hook/src/ExampleDefault.php.twig

@@ -0,0 +1,20 @@
+<?php
+
+namespace Drupal\{{ machine_name }};
+
+use Drupal\Core\Plugin\PluginBase;
+
+/**
+ * Default class used for {{ plugin_type|plural }} plugins.
+ */
+class {{ class_prefix }}Default extends PluginBase implements {{ class_prefix }}Interface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function label() {
+    // The title from hook discovery may be a TranslatableMarkup object.
+    return (string) $this->pluginDefinition['label'];
+  }
+
+}

vendor/chi-teck/drupal-code-generator/templates/d8/plugin-manager/hook/src/ExampleInterface.php.twig

@@ -0,0 +1,18 @@
+<?php
+
+namespace Drupal\{{ machine_name }};
+
+/**
+ * Interface for {{ plugin_type }} plugins.
+ */
+interface {{ class_prefix }}Interface {
+
+  /**
+   * Returns the translated plugin label.
+   *
+   * @return string
+   *   The translated title.
+   */
+  public function label();
+
+}

vendor/chi-teck/drupal-code-generator/templates/d8/plugin-manager/hook/src/ExamplePluginManager.php.twig

@@ -0,0 +1,59 @@
+<?php
+
+namespace Drupal\{{ machine_name }};
+
+use Drupal\Core\Cache\CacheBackendInterface;
+use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\Core\Plugin\DefaultPluginManager;
+use Drupal\Core\Plugin\Discovery\HookDiscovery;
+use Drupal\Core\Plugin\Factory\ContainerFactory;
+
+/**
+ * Defines a plugin manager to deal with {{ plugin_type|plural }}.
+ *
+ * @see \Drupal\{{ machine_name }}\{{ class_prefix }}Default
+ * @see \Drupal\{{ machine_name }}\{{ class_prefix }}Interface
+ * @see plugin_api
+ */
+class {{ class_prefix }}PluginManager extends DefaultPluginManager {
+
+  /**
+   * {@inheritdoc}
+   */
+  protected $defaults = [
+    // The {{ plugin_type }} id. Set by the plugin system based on the array key.
+    'id' => '',
+    // The {{ plugin_type }} label.
+    'label' => '',
+    // The {{ plugin_type }} description.
+    'description' => '',
+    // Default plugin class.
+    'class' => 'Drupal\{{ machine_name }}\{{ class_prefix }}Default',
+  ];
+
+  /**
+   * Constructs {{ class_prefix }}PluginManager object.
+   *
+   * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
+   *   The module handler to invoke the alter hook with.
+   * @param \Drupal\Core\Cache\CacheBackendInterface $cache_backend
+   *   Cache backend instance to use.
+   */
+  public function __construct(ModuleHandlerInterface $module_handler, CacheBackendInterface $cache_backend) {
+    $this->factory = new ContainerFactory($this);
+    $this->moduleHandler = $module_handler;
+    $this->alterInfo('{{ plugin_type }}_info');
+    $this->setCacheBackend($cache_backend, '{{ plugin_type }}_plugins');
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function getDiscovery() {
+    if (!isset($this->discovery)) {
+      $this->discovery = new HookDiscovery($this->moduleHandler, '{{ plugin_type }}_info');
+    }
+    return $this->discovery;
+  }
+
+}