diff --git a/core/modules/aggregator/src/Entity/Feed.php b/core/modules/aggregator/src/Entity/Feed.php
index 724a875..d373ded 100644
--- a/core/modules/aggregator/src/Entity/Feed.php
+++ b/core/modules/aggregator/src/Entity/Feed.php
@@ -127,16 +127,7 @@ public static function postDelete(EntityStorageInterface $storage, array $entiti
    * {@inheritdoc}
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields['fid'] = BaseFieldDefinition::create('integer')
-      ->setLabel(t('Feed ID'))
-      ->setDescription(t('The ID of the aggregator feed.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
-
-    $fields['uuid'] = BaseFieldDefinition::create('uuid')
-      ->setLabel(t('UUID'))
-      ->setDescription(t('The aggregator feed UUID.'))
-      ->setReadOnly(TRUE);
+    $fields = parent::baseFieldDefinitions($entity_type);
 
     $fields['title'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Title'))
@@ -150,17 +141,6 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setDisplayConfigurable('form', TRUE)
       ->addConstraint('FeedTitle');
 
-    $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
-      ->setDescription(t('The feed language code.'))
-      ->setDisplayOptions('view', array(
-        'type' => 'hidden',
-      ))
-      ->setDisplayOptions('form', array(
-        'type' => 'language_select',
-        'weight' => 2,
-      ));
-
     $fields['url'] = BaseFieldDefinition::create('uri')
       ->setLabel(t('URL'))
       ->setDescription(t('The fully-qualified URL of the feed.'))
diff --git a/core/modules/aggregator/src/Entity/Item.php b/core/modules/aggregator/src/Entity/Item.php
index 046ec41..d0f67dc 100644
--- a/core/modules/aggregator/src/Entity/Item.php
+++ b/core/modules/aggregator/src/Entity/Item.php
@@ -47,11 +47,7 @@ public function label() {
    * {@inheritdoc}
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields['iid'] = BaseFieldDefinition::create('integer')
-      ->setLabel(t('Aggregator item ID'))
-      ->setDescription(t('The ID of the feed item.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
+    $fields = parent::baseFieldDefinitions($entity_type);
 
     $fields['fid'] = BaseFieldDefinition::create('entity_reference')
       ->setLabel(t('Source feed'))
@@ -69,10 +65,6 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setLabel(t('Title'))
       ->setDescription(t('The title of the feed item.'));
 
-    $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
-      ->setDescription(t('The feed item language code.'));
-
     $fields['link'] = BaseFieldDefinition::create('uri')
       ->setLabel(t('Link'))
       ->setDescription(t('The link of the feed item.'))
diff --git a/core/modules/block_content/src/Entity/BlockContent.php b/core/modules/block_content/src/Entity/BlockContent.php
index 958fc7a..bf19ba9 100644
--- a/core/modules/block_content/src/Entity/BlockContent.php
+++ b/core/modules/block_content/src/Entity/BlockContent.php
@@ -144,35 +144,7 @@ public function delete() {
    * {@inheritdoc}
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields['id'] = BaseFieldDefinition::create('integer')
-      ->setLabel(t('Custom block ID'))
-      ->setDescription(t('The custom block ID.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
-
-    $fields['uuid'] = BaseFieldDefinition::create('uuid')
-      ->setLabel(t('UUID'))
-      ->setDescription(t('The custom block UUID.'))
-      ->setReadOnly(TRUE);
-
-    $fields['revision_id'] = BaseFieldDefinition::create('integer')
-      ->setLabel(t('Revision ID'))
-      ->setDescription(t('The revision ID.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
-
-    $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language'))
-      ->setDescription(t('The custom block language code.'))
-      ->setTranslatable(TRUE)
-      ->setRevisionable(TRUE)
-      ->setDisplayOptions('view', array(
-        'type' => 'hidden',
-      ))
-      ->setDisplayOptions('form', array(
-        'type' => 'language_select',
-        'weight' => 2,
-      ));
+    $fields = parent::baseFieldDefinitions($entity_type);
 
     $fields['info'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Block description'))
diff --git a/core/modules/comment/src/Entity/Comment.php b/core/modules/comment/src/Entity/Comment.php
index 0f34925..608a34f 100644
--- a/core/modules/comment/src/Entity/Comment.php
+++ b/core/modules/comment/src/Entity/Comment.php
@@ -208,16 +208,7 @@ public function permalink() {
    * {@inheritdoc}
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields['cid'] = BaseFieldDefinition::create('integer')
-      ->setLabel(t('Comment ID'))
-      ->setDescription(t('The comment ID.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
-
-    $fields['uuid'] = BaseFieldDefinition::create('uuid')
-      ->setLabel(t('UUID'))
-      ->setDescription(t('The comment UUID.'))
-      ->setReadOnly(TRUE);
+    $fields = parent::baseFieldDefinitions($entity_type);
 
     $fields['pid'] = BaseFieldDefinition::create('entity_reference')
       ->setLabel(t('Parent ID'))
@@ -229,18 +220,6 @@ public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
       ->setDescription(t('The ID of the entity of which this comment is a reply.'))
       ->setRequired(TRUE);
 
-    $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language'))
-      ->setDescription(t('The comment language code.'))
-      ->setTranslatable(TRUE)
-      ->setDisplayOptions('view', array(
-        'type' => 'hidden',
-      ))
-      ->setDisplayOptions('form', array(
-        'type' => 'language_select',
-        'weight' => 2,
-      ));
-
     $fields['subject'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Subject'))
       ->setTranslatable(TRUE)
diff --git a/core/modules/contact/src/Entity/Message.php b/core/modules/contact/src/Entity/Message.php
index 86ee30b..1cfcc2d 100644
--- a/core/modules/contact/src/Entity/Message.php
+++ b/core/modules/contact/src/Entity/Message.php
@@ -130,24 +130,7 @@ public function getPersonalRecipient() {
    * {@inheritdoc}
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields['contact_form'] = BaseFieldDefinition::create('entity_reference')
-      ->setLabel(t('Form ID'))
-      ->setDescription(t('The ID of the associated form.'))
-      ->setSetting('target_type', 'contact_form')
-      ->setRequired(TRUE);
-
-    $fields['uuid'] = BaseFieldDefinition::create('uuid')
-      ->setLabel(t('UUID'))
-      ->setDescription(t('The message UUID.'))
-      ->setReadOnly(TRUE);
-
-    $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language'))
-      ->setDescription(t('The message language code.'))
-      ->setDisplayOptions('form', array(
-        'type' => 'language_select',
-        'weight' => 2,
-      ));
+    $fields = parent::baseFieldDefinitions($entity_type);
 
     $fields['name'] = BaseFieldDefinition::create('string')
       ->setLabel(t("The sender's name"))
diff --git a/core/modules/file/src/Entity/File.php b/core/modules/file/src/Entity/File.php
index 0c34871..66ef2e8 100644
--- a/core/modules/file/src/Entity/File.php
+++ b/core/modules/file/src/Entity/File.php
@@ -214,20 +214,7 @@ public static function preDelete(EntityStorageInterface $storage, array $entitie
    * {@inheritdoc}
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields['fid'] = BaseFieldDefinition::create('integer')
-      ->setLabel(t('File ID'))
-      ->setDescription(t('The file ID.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
-
-    $fields['uuid'] = BaseFieldDefinition::create('uuid')
-      ->setLabel(t('UUID'))
-      ->setDescription(t('The file UUID.'))
-      ->setReadOnly(TRUE);
-
-    $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
-      ->setDescription(t('The file language code.'));
+    $fields = parent::baseFieldDefinitions($entity_type);
 
     $fields['uid'] = BaseFieldDefinition::create('entity_reference')
       ->setLabel(t('User ID'))
diff --git a/core/modules/menu_link_content/src/Entity/MenuLinkContent.php b/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
index d0f4bc5..d375f00 100644
--- a/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
+++ b/core/modules/menu_link_content/src/Entity/MenuLinkContent.php
@@ -233,16 +233,7 @@ public static function preDelete(EntityStorageInterface $storage, array $entitie
    * {@inheritdoc}
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields['id'] = BaseFieldDefinition::create('integer')
-      ->setLabel(t('Entity ID'))
-      ->setDescription(t('The entity ID for this menu link content entity.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
-
-    $fields['uuid'] = BaseFieldDefinition::create('uuid')
-      ->setLabel(t('UUID'))
-      ->setDescription(t('The content menu link UUID.'))
-      ->setReadOnly(TRUE);
+    $fields = parent::baseFieldDefinitions($entity_type);
 
     $fields['bundle'] = BaseFieldDefinition::create('string')
       ->setLabel(t('Bundle'))
diff --git a/core/modules/shortcut/src/Entity/Shortcut.php b/core/modules/shortcut/src/Entity/Shortcut.php
index 94b5c62..5fca74e 100644
--- a/core/modules/shortcut/src/Entity/Shortcut.php
+++ b/core/modules/shortcut/src/Entity/Shortcut.php
@@ -105,16 +105,7 @@ public function postSave(EntityStorageInterface $storage, $update = TRUE) {
    * {@inheritdoc}
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields['id'] = BaseFieldDefinition::create('integer')
-      ->setLabel(t('ID'))
-      ->setDescription(t('The ID of the shortcut.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
-
-    $fields['uuid'] = BaseFieldDefinition::create('uuid')
-      ->setLabel(t('UUID'))
-      ->setDescription(t('The UUID of the shortcut.'))
-      ->setReadOnly(TRUE);
+    $fields = parent::baseFieldDefinitions($entity_type);
 
     $fields['shortcut_set'] = BaseFieldDefinition::create('entity_reference')
       ->setLabel(t('Shortcut set'))
diff --git a/core/modules/taxonomy/src/Entity/Term.php b/core/modules/taxonomy/src/Entity/Term.php
index 65386479..01517ff 100644
--- a/core/modules/taxonomy/src/Entity/Term.php
+++ b/core/modules/taxonomy/src/Entity/Term.php
@@ -101,16 +101,7 @@ public function postSave(EntityStorageInterface $storage, $update = TRUE) {
    * {@inheritdoc}
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields['tid'] = BaseFieldDefinition::create('integer')
-      ->setLabel(t('Term ID'))
-      ->setDescription(t('The term ID.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
-
-    $fields['uuid'] = BaseFieldDefinition::create('uuid')
-      ->setLabel(t('UUID'))
-      ->setDescription(t('The term UUID.'))
-      ->setReadOnly(TRUE);
+    $fields = parent::baseFieldDefinitions($entity_type);
 
     $fields['vid'] = BaseFieldDefinition::create('entity_reference')
       ->setLabel(t('Vocabulary'))
diff --git a/core/modules/user/src/Entity/User.php b/core/modules/user/src/Entity/User.php
index 4896bad..0a14750 100644
--- a/core/modules/user/src/Entity/User.php
+++ b/core/modules/user/src/Entity/User.php
@@ -425,21 +425,7 @@ public static function getAnonymousUser() {
    * {@inheritdoc}
    */
   public static function baseFieldDefinitions(EntityTypeInterface $entity_type) {
-    $fields['uid'] = BaseFieldDefinition::create('integer')
-      ->setLabel(t('User ID'))
-      ->setDescription(t('The user ID.'))
-      ->setReadOnly(TRUE)
-      ->setSetting('unsigned', TRUE);
-
-    $fields['uuid'] = BaseFieldDefinition::create('uuid')
-      ->setLabel(t('UUID'))
-      ->setDescription(t('The user UUID.'))
-      ->setReadOnly(TRUE);
-
-    $fields['langcode'] = BaseFieldDefinition::create('language')
-      ->setLabel(t('Language code'))
-      ->setDescription(t('The user language code.'))
-      ->setTranslatable(TRUE);
+    $fields = parent::baseFieldDefinitions($entity_type);
 
     $fields['preferred_langcode'] = BaseFieldDefinition::create('language')
       ->setLabel(t('Preferred language code'))