diff -u b/core/modules/user/lib/Drupal/user/Controller/UserListController.php b/core/modules/user/lib/Drupal/user/Controller/UserListController.php
--- b/core/modules/user/lib/Drupal/user/Controller/UserListController.php
+++ b/core/modules/user/lib/Drupal/user/Controller/UserListController.php
@@ -16,7 +16,9 @@
 use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
- * @todo.
+ * Lists user entities.
+ *
+ * @see \Drupal\user\Entity\User
  */
 class UserListController extends EntityListController implements EntityControllerInterface {
 
@@ -77,11 +79,34 @@
    */
   public function buildHeader() {
     $header = array(
-      'username' => array('data' => $this->t('Username'), 'field' => 'name', 'specifier' => 'name'),
-      'status' => array('data' => $this->t('Status'), 'field' => 'status', 'specifier' => 'status', 'class' => array(RESPONSIVE_PRIORITY_LOW)),
-      'roles' => array('data' => $this->t('Roles'), 'class' => array(RESPONSIVE_PRIORITY_LOW)),
-      'member_for' => array('data' => $this->t('Member for'), 'field' => 'created', 'specifier' => 'created', 'sort' => 'desc', 'class' => array(RESPONSIVE_PRIORITY_LOW)),
-      'access' => array('data' => $this->t('Last access'), 'field' => 'access', 'specifier' => 'access', 'class' => array(RESPONSIVE_PRIORITY_LOW)),
+      'username' => array(
+        'data' => $this->t('Username'),
+        'field' => 'name',
+        'specifier' => 'name',
+      ),
+      'status' => array(
+        'data' => $this->t('Status'),
+        'field' => 'status',
+        'specifier' => 'status',
+        'class' => array(RESPONSIVE_PRIORITY_LOW),
+      ),
+      'roles' => array(
+        'data' => $this->t('Roles'),
+        'class' => array(RESPONSIVE_PRIORITY_LOW),
+      ),
+      'member_for' => array(
+        'data' => $this->t('Member for'),
+        'field' => 'created',
+        'specifier' => 'created',
+        'sort' => 'desc',
+        'class' => array(RESPONSIVE_PRIORITY_LOW),
+      ),
+      'access' => array(
+        'data' => $this->t('Last access'),
+        'field' => 'access',
+        'specifier' => 'access',
+        'class' => array(RESPONSIVE_PRIORITY_LOW),
+      ),
     );
     return $header + parent::buildHeader();
   }
@@ -110,7 +135,9 @@
       '#items' => $users_roles,
     );
     $row['member_for'] = format_interval(REQUEST_TIME - $entity->getCreatedTime());
-    $row['access'] = $entity->access ? $this->t('@time ago', array('@time' => format_interval(REQUEST_TIME - $entity->getLastAccessedTime()))) : t('never');
+    $row['access'] = $entity->access ? $this->t('@time ago', array(
+      '@time' => format_interval(REQUEST_TIME - $entity->getLastAccessedTime()),
+    )) : t('never');
     return $row + parent::buildRow($entity);
   }