diff --git a/core/modules/comment/lib/Drupal/comment/Plugin/views/argument/UserUid.php b/core/modules/comment/lib/Drupal/comment/Plugin/views/argument/UserUid.php
index e4fe764..5ff1fe6 100644
--- a/core/modules/comment/lib/Drupal/comment/Plugin/views/argument/UserUid.php
+++ b/core/modules/comment/lib/Drupal/comment/Plugin/views/argument/UserUid.php
@@ -66,7 +66,10 @@ public function query($group_by = FALSE) {
     $this->query->add_where(0, $condition);
   }
 
-  function get_sort_name() {
+  /**
+   * {@inheritdoc}
+   */
+  public function getSortName() {
     return t('Numerical', array(), array('context' => 'Sort order'));
   }
 
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php b/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php
index 117ade9..7ff2045 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/argument/ArgumentPluginBase.php
@@ -594,7 +594,7 @@ function default_summary_form(&$form, &$form_state) {
       '#title' => t('Sort by'),
       '#default_value' => $this->options['summary']['number_of_records'],
       '#options' => array(
-        0 => $this->get_sort_name(),
+        0 => $this->getSortName(),
         1 => t('Number of records')
       ),
       '#states' => array(
@@ -1075,7 +1075,7 @@ function get_plugin($type = 'argument_default', $name = NULL) {
    * Subclasses should override this to specify what the default sort order of
    * their argument is (e.g. alphabetical, numeric, date).
    */
-  function get_sort_name() {
+  public function getSortName() {
     return t('Default sort', array(), array('context' => 'Sort order'));
   }
 
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/argument/Date.php b/core/modules/views/lib/Drupal/views/Plugin/views/argument/Date.php
index 6294ee3..737fd21 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/argument/Date.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/argument/Date.php
@@ -87,7 +87,10 @@ function get_default_argument($raw = FALSE) {
     return parent::get_default_argument($raw);
   }
 
-  function get_sort_name() {
+  /**
+   * {@inheritdoc}
+   */
+  public function getSortName() {
     return t('Date', array(), array('context' => 'Sort order'));
   }
 
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/argument/GroupByNumeric.php b/core/modules/views/lib/Drupal/views/Plugin/views/argument/GroupByNumeric.php
index 7e8ef76..eead699 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/argument/GroupByNumeric.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/argument/GroupByNumeric.php
@@ -30,7 +30,10 @@ public function adminLabel($short = FALSE) {
     return $this->getField(parent::adminLabel($short));
   }
 
-  function get_sort_name() {
+  /**
+   * {@inheritdoc}
+   */
+  public function getSortName() {
     return t('Numerical', array(), array('context' => 'Sort order'));
   }
 
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/argument/Numeric.php b/core/modules/views/lib/Drupal/views/Plugin/views/argument/Numeric.php
index 3038694..d9453d1 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/argument/Numeric.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/argument/Numeric.php
@@ -117,7 +117,10 @@ public function query($group_by = FALSE) {
     }
   }
 
-  function get_sort_name() {
+  /**
+   * {@inheritdoc}
+   */
+  public function getSortName() {
     return t('Numerical', array(), array('context' => 'Sort order'));
   }
 
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/argument/String.php b/core/modules/views/lib/Drupal/views/Plugin/views/argument/String.php
index 139bdd2..06500bd 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/argument/String.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/argument/String.php
@@ -249,7 +249,10 @@ function summary_argument($data) {
     return $value;
   }
 
-  function get_sort_name() {
+  /**
+   * {@inheritdoc}
+   */
+  public function getSortName() {
     return t('Alphabetical', array(), array('context' => 'Sort order'));
   }