--- /dev/null
+<?php
+
+namespace Drupal\comment\Plugin\Action;
+
+use Drupal\Core\Action\ActionBase;
+use Drupal\Core\Session\AccountInterface;
+
+/**
+ * Unpublishes a comment.
+ *
+ * @Action(
+ * id = "comment_unpublish_action",
+ * label = @Translation("Unpublish comment"),
+ * type = "comment"
+ * )
+ */
+class UnpublishComment extends ActionBase {
+
+ /**
+ * {@inheritdoc}
+ */
+ public function execute($comment = NULL) {
+ $comment->setPublished(FALSE);
+ $comment->save();
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function access($object, AccountInterface $account = NULL, $return_as_object = FALSE) {
+ /** @var \Drupal\comment\CommentInterface $object */
+ $result = $object->status->access('edit', $account, TRUE)
+ ->andIf($object->access('update', $account, TRUE));
+
+ return $return_as_object ? $result : $result->isAllowed();
+ }
+
+}