diff --git a/core/lib/Drupal/Core/Template/TwigExtension.php b/core/lib/Drupal/Core/Template/TwigExtension.php
index 8270c66..9a31eee 100644
--- a/core/lib/Drupal/Core/Template/TwigExtension.php
+++ b/core/lib/Drupal/Core/Template/TwigExtension.php
@@ -135,6 +135,7 @@ public function getFunctions() {
       new \Twig_SimpleFunction('attach_library', [$this, 'attachLibrary']),
       new \Twig_SimpleFunction('active_theme_path', [$this, 'getActiveThemePath']),
       new \Twig_SimpleFunction('active_theme', [$this, 'getActiveTheme']),
+      new \Twig_SimpleFunction('addAttributes', [$this, 'addAttributes']),
     ];
   }
 
@@ -600,4 +601,17 @@ public function safeJoin(\Twig_Environment $env, $value, $glue = '') {
     }, (array) $value));
   }
 
+  /**
+   * Create an Attribute object from an array.
+   *
+   * @param array $attributes
+   *   Array (key, value) for attributes.
+   *
+   * @return Attribute
+   *   An Attribute object.
+   */
+  public function addAttributes($attributes) {
+    return new Attribute($attributes);
+  }
+
 }