diff --git a/core/lib/Drupal/Core/Entity/EntityPublishedTrait.php b/core/lib/Drupal/Core/Entity/EntityPublishedTrait.php
index 8871dba..df321d7 100644
--- a/core/lib/Drupal/Core/Entity/EntityPublishedTrait.php
+++ b/core/lib/Drupal/Core/Entity/EntityPublishedTrait.php
@@ -5,34 +5,53 @@
 use Drupal\Core\Field\BaseFieldDefinition;
 use Drupal\Core\StringTranslation\TranslatableMarkup;
 
+/**
+ * Provides a trait for published status.
+ */
 trait EntityPublishedTrait {
 
+  /**
+   * Returns an array of base field definitions for publishing status.
+   *
+   * @param \Drupal\Core\Entity\EntityTypeInterface $entity_type
+   *   The entity type to add the publishing status field to.
+   *
+   * @return \Drupal\Core\Field\BaseFieldDefinition[]
+   *   Array of base field definitions.
+   */
   public static function publishedBaseFieldDefinitions(EntityTypeInterface $entity_type) {
     $key = $entity_type->hasKey('status') ? $entity_type->getKey('status') : 'status';
     return [$key => BaseFieldDefinition::create('boolean')
       ->setLabel(new TranslatableMarkup('Publishing status'))
-      ->setDescription(t('A boolean indicating the published state.'))
+      ->setDescription(new TranslatableMarkup('A boolean indicating the published state.'))
       ->setRevisionable(TRUE)
       ->setTranslatable(TRUE)
       ->setDefaultValue(TRUE)];
   }
 
   /**
-   * {@inheritdoc}
+   * Returns the published status of the entity.
+   *
+   * @return bool
+   *   The published status of the entity.
    */
   public function isPublished() {
-    return $this->getEntityType()->hasKey('status') ?
-      (bool) $this->getEntityKey('status') :
-      (bool) $this->get('status')->value;
+    $status = $this->getEntityKey('status');
+    return (bool) ($status ?: $this->get('status')->value);
   }
 
   /**
-   * {@inheritdoc}
+   * Sets the entity as published or not published.
+   *
+   * @param bool $published
+   *   A boolean value denoting the published status.
+   *
+   * @return \Drupal\Core\Entity\ContentEntityInterface $this
+   *   The Content Entity object.
    */
   public function setPublished($published) {
     /** @var \Drupal\Core\Entity\ContentEntityTypeInterface $entity_type */
-    $entity_type = $this->getEntityType();
-    $key = $entity_type->hasKey('status') ? $entity_type->getKey('status') : 'status';
+    $key = $this->getEntityType()->getKey('status') ?: 'status';
     // @todo: Replace values with constants from EntityPublishedInterface or
     // similar when introduced. https://www.drupal.org/node/2811667
     $this->set($key, $published ? 1 : 0);