Add an argument validator/default plugin

lib/Drupal/views/Plugins/Type/ArgumentPluginManager.php → lib/Drupal/views/Plugins/Type/ArgumentDefaultPluginManager.php

@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Definition of Drupal\views\Plugins\Type\ArgumentPluginManager.
+ * Definition of Drupal\views\Plugins\Type\ArgumentDefaultPluginManager.
  */
 
 namespace Drupal\views\Plugins\Type;
@@ -11,9 +11,9 @@
 use Drupal\Component\Plugin\Factory\DefaultFactory;
 use Drupal\views\Plugins\Discovery\ViewsDiscovery;
 
-class ArgumentPluginManager extends PluginManagerBase {
+class ArgumentDefaultPluginManager extends PluginManagerBase {
   public function __construct() {
-    $this->discovery = new ViewsDiscovery('views_plugins', 'argument');
+    $this->discovery = new ViewsDiscovery('views_plugins', 'argument default');
     $this->factory = new DefaultFactory($this);
   }
 }

lib/Drupal/views/Plugins/Type/ArgumentValidatorPluginManager.php

+<?php
+
+/**
+ * @file
+ * Definition of Drupal\views\Plugins\Type\ArgumentValidatorPluginManager.
+ */
+
+namespace Drupal\views\Plugins\Type;
+
+use Drupal\Component\Plugin\PluginManagerBase;
+use Drupal\Component\Plugin\Factory\DefaultFactory;
+use Drupal\views\Plugins\Discovery\ViewsDiscovery;
+
+class ArgumentValidatorPluginManager extends PluginManagerBase {
+  public function __construct() {
+    $this->discovery = new ViewsDiscovery('views_plugins', 'argument validator');
+    $this->factory = new DefaultFactory($this);
+  }
+}