diff --git a/src/TaggedEntityTypeManager.php b/src/TaggedEntityTypeManager.php
index 23af9e1..0cbfccc 100644
--- a/src/TaggedEntityTypeManager.php
+++ b/src/TaggedEntityTypeManager.php
@@ -86,6 +86,21 @@ class TaggedEntityTypeManager implements EntityTypeManagerInterface {
     return $this->entityTypeManager->getDefinition($entity_type_id, $exception_on_invalid);
   }
 
+  /**
+   * Gets the active definition for a content entity type.
+   *
+   * This is an internal method for EntityTypeManager.
+   *
+   * @param string $entity_type_id
+   *   The entity type ID.
+   *
+   * @return \Drupal\Core\Entity\EntityTypeInterface
+   *   The active entity type definition.
+   */
+  public function getActiveDefinition($entity_type_id) {
+    return $this->entityTypeManager->getDefinition($entity_type_id);
+  }
+
   /**
    * {@inheritdoc}
    */