diff --git a/core/lib/Drupal/Core/Entity/EntityDisplayBase.php b/core/lib/Drupal/Core/Entity/EntityDisplayBase.php
index ca106b290f..78a4d5de59 100644
--- a/core/lib/Drupal/Core/Entity/EntityDisplayBase.php
+++ b/core/lib/Drupal/Core/Entity/EntityDisplayBase.php
@@ -250,7 +250,7 @@ public function id() {
   /**
    * {@inheritdoc}
    */
-  public function preSave(EntityStorageInterface $storage, $update = TRUE) {
+  public function preSave(EntityStorageInterface $storage) {
     // Ensure that a region is set on each component.
     foreach ($this->getComponents() as $name => $component) {
       $this->handleHiddenType($name, $component);
@@ -263,7 +263,7 @@ public function preSave(EntityStorageInterface $storage, $update = TRUE) {
 
     ksort($this->content);
     ksort($this->hidden);
-    parent::preSave($storage, $update);
+    parent::preSave($storage);
   }
 
   /**
diff --git a/core/lib/Drupal/Core/Field/FieldItemListInterface.php b/core/lib/Drupal/Core/Field/FieldItemListInterface.php
index c350432e21..87331306fb 100644
--- a/core/lib/Drupal/Core/Field/FieldItemListInterface.php
+++ b/core/lib/Drupal/Core/Field/FieldItemListInterface.php
@@ -271,4 +271,15 @@ public static function processDefaultValue($default_value, FieldableEntityInterf
    */
   public function equals(FieldItemListInterface $list_to_compare);
 
+  /**
+   * Gets the field data value.
+   *
+   * @param bool $include_computed
+   *   (optional) Whether computed properties should be included. Defaults to
+   *   FALSE.
+   *
+   * @return mixed
+   */
+  public function getValue($include_computed = FALSE);
+
 }
diff --git a/core/lib/Drupal/Core/TypedData/ComputedItemListTrait.php b/core/lib/Drupal/Core/TypedData/ComputedItemListTrait.php
index f6660c4cca..a5413099ce 100644
--- a/core/lib/Drupal/Core/TypedData/ComputedItemListTrait.php
+++ b/core/lib/Drupal/Core/TypedData/ComputedItemListTrait.php
@@ -39,9 +39,9 @@ protected function ensureComputedValue() {
   /**
    * {@inheritdoc}
    */
-  public function getValue() {
+  public function getValue($include_computed = FALSE) {
     $this->ensureComputedValue();
-    return parent::getValue();
+    return parent::getValue($include_computed);
   }
 
   /**
diff --git a/core/modules/datetime/src/DateTimeComputed.php b/core/modules/datetime/src/DateTimeComputed.php
index 2208ab7cb7..73fb117862 100644
--- a/core/modules/datetime/src/DateTimeComputed.php
+++ b/core/modules/datetime/src/DateTimeComputed.php
@@ -37,7 +37,7 @@ public function __construct(DataDefinitionInterface $definition, $name = NULL, T
   /**
    * {@inheritdoc}
    */
-  public function getValue($langcode = NULL) {
+  public function getValue() {
     if ($this->date !== NULL) {
       return $this->date;
     }
diff --git a/core/modules/forum/src/Form/Overview.php b/core/modules/forum/src/Form/Overview.php
index a51446b173..efc9266418 100644
--- a/core/modules/forum/src/Form/Overview.php
+++ b/core/modules/forum/src/Form/Overview.php
@@ -8,6 +8,7 @@
 use Drupal\Core\Url;
 use Drupal\taxonomy\Form\OverviewTerms;
 use Drupal\Core\Extension\ModuleHandlerInterface;
+use Drupal\taxonomy\VocabularyInterface;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 
 /**
@@ -47,7 +48,7 @@ public function getFormId() {
   /**
    * {@inheritdoc}
    */
-  public function buildForm(array $form, FormStateInterface $form_state) {
+  public function buildForm(array $form, FormStateInterface $form_state, VocabularyInterface $taxonomy_vocabulary = NULL) {
     $forum_config = $this->config('forum.settings');
     $vid = $forum_config->get('vocabulary');
     $vocabulary = $this->entityManager->getStorage('taxonomy_vocabulary')->load($vid);