Update to Drupal 8.1.2. For more information, see https://www.drupal.org/project/drupal/releases/8.1.2

core/lib/Drupal/Core/Ajax/CloseDialogCommand.php

@@ -46,4 +46,5 @@ class CloseDialogCommand implements CommandInterface {
       'persist' => $this->persist,
     );
   }
+
 }

core/lib/Drupal/Core/Ajax/CommandInterface.php

@@ -16,4 +16,5 @@ interface CommandInterface {
    * Return an array to be run through json_encode and sent to the client.
    */
   public function render();
+
 }

core/lib/Drupal/Core/Ajax/DataCommand.php

@@ -48,7 +48,7 @@ class DataCommand implements CommandInterface {
    *   A CSS selector for the elements to which the data will be attached.
    * @param string $name
    *   The key of the data to be attached to elements matched by the selector.
-   * @param type $value
+   * @param mixed $value
    *   The value of the data to be attached to elements matched by the selector.
    */
   public function __construct($selector, $name, $value) {

core/lib/Drupal/Core/Ajax/OpenModalDialogCommand.php

@@ -33,4 +33,5 @@ class OpenModalDialogCommand extends OpenDialogCommand {
     $dialog_options['modal'] = TRUE;
     parent::__construct('#drupal-modal', $title, $content, $dialog_options, $settings);
   }
+
 }

core/lib/Drupal/Core/Ajax/RemoveCommand.php

@@ -29,7 +29,6 @@ class RemoveCommand implements CommandInterface {
    * Constructs a RemoveCommand object.
    *
    * @param string $selector
-   *
    */
   public function __construct($selector) {
     $this->selector = $selector;

core/lib/Drupal/Core/Ajax/SetDialogTitleCommand.php

@@ -23,4 +23,5 @@ class SetDialogTitleCommand extends SetDialogOptionCommand {
     $this->optionName = 'title';
     $this->optionValue = $title;
   }
+
 }