Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/lib/Drupal/Core/GeneratedLink.php

@@ -0,0 +1,49 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Core\GeneratedLink.
+ */
+
+namespace Drupal\Core;
+
+use Drupal\Core\Cache\CacheableMetadata;
+
+/**
+ * Used to return generated links, along with associated cacheability metadata.
+ *
+ * Note: not to be confused with \Drupal\Core\Link, which is for passing around
+ *   ungenerated links (typically link text + route name + route parameters).
+ */
+class GeneratedLink extends CacheableMetadata {
+
+  /**
+   * The HTML string value containing a link.
+   *
+   * @var string
+   */
+  protected $generatedLink = '';
+
+  /**
+   * Gets the generated link.
+   *
+   * @return string
+   */
+  public function getGeneratedLink() {
+    return $this->generatedLink ;
+  }
+
+  /**
+   * Sets the generated link.
+   *
+   * @param string $generated_link
+   *   The generated link.
+   *
+   * @return $this
+   */
+  public function setGeneratedLink($generated_link) {
+    $this->generatedLink = $generated_link;
+    return $this;
+  }
+
+}