Issue #2496801 by cilefen, Cottser: Change setGenerators to setUrlGenerator on TwigExtension

core/core.services.yml

@@ -1310,7 +1310,7 @@ services:
     tags:
       - { name: twig.extension, priority: 100 }
     calls:
-      - [setGenerators, ['@url_generator']]
+      - [setUrlGenerator, ['@url_generator']]
       - [setThemeManager, ['@theme.manager']]
   # @todo Figure out what to do about debugging functions.
   # @see https://www.drupal.org/node/1804998

core/lib/Drupal/Core/Template/TwigExtension.php

@@ -65,8 +65,23 @@ class TwigExtension extends \Twig_Extension {
    *   The URL generator.
    *
    * @return $this
+   *
+   * @deprecated in Drupal 8.0.x-dev, will be removed before Drupal 9.0.0.
+   *   Use \Drupal\Core\Template\TwigExtension::setUrlGenerator().
    */
   public function setGenerators(UrlGeneratorInterface $url_generator) {
+    return $this->setUrlGenerator($url_generator);
+  }
+
+  /**
+   * Sets the URL generator.
+   *
+   * @param \Drupal\Core\Routing\UrlGeneratorInterface $url_generator
+   *   The URL generator.
+   *
+   * @return $this
+   */
+  public function setUrlGenerator(UrlGeneratorInterface $url_generator) {
     $this->urlGenerator = $url_generator;
     return $this;
   }

core/tests/Drupal/Tests/Core/Template/TwigExtensionTest.php

@@ -32,7 +32,7 @@ class TwigExtensionTest extends UnitTestCase {
       'autoescape' => TRUE,
       'optimizations' => 0
     ));
-    $twig->addExtension((new TwigExtension($renderer))->setGenerators($this->getMock('Drupal\Core\Routing\UrlGeneratorInterface')));
+    $twig->addExtension((new TwigExtension($renderer))->setUrlGenerator($this->getMock('Drupal\Core\Routing\UrlGeneratorInterface')));
 
     $nodes = $twig->parse($twig->tokenize($template));