diff --git a/core/modules/content_moderation/src/EventSubscriber/ConfigImportSubscriber.php b/core/modules/content_moderation/src/EventSubscriber/ConfigImportSubscriber.php
index a368894416..ab8e5802bb 100644
--- a/core/modules/content_moderation/src/EventSubscriber/ConfigImportSubscriber.php
+++ b/core/modules/content_moderation/src/EventSubscriber/ConfigImportSubscriber.php
@@ -79,8 +79,10 @@ public function onConfigImporterValidate(ConfigImporterEvent $event) {
    * Get the workflow entity object from the configuration name.
    *
    * @param string $config_name
+   *   The configuration object name.
    *
    * @return \Drupal\Core\Entity\EntityInterface|null
+   *   An entity object. NULL if no matching entity is found.
    */
   protected function getWorkflow($config_name) {
     $entity_type_id = $this->configManager->getEntityTypeIdByName($config_name);
diff --git a/core/modules/content_moderation/tests/src/Kernel/ContentModerationWorkflowConfigTest.php b/core/modules/content_moderation/tests/src/Kernel/ContentModerationWorkflowConfigTest.php
index 15bc5fb284..0680bf1f26 100644
--- a/core/modules/content_moderation/tests/src/Kernel/ContentModerationWorkflowConfigTest.php
+++ b/core/modules/content_moderation/tests/src/Kernel/ContentModerationWorkflowConfigTest.php
@@ -128,7 +128,7 @@ public function testDeletingStateViaConfiguration() {
 
     \Drupal::service('config.storage.sync')->delete('workflows.workflow.editorial');
 
-
+    // An error should be thrown when trying to delete an in use workflow.
     try {
       $this->configImporter()->reset()->import();
       $this->fail('ConfigImporterException not thrown, invalid import was not stopped due to deleted workflow.');