diff --git a/modules/content_lock_timeout/src/Tests/ContentLockTimeoutTest.php b/modules/content_lock_timeout/src/Tests/ContentLockTimeoutTest.php
index 89f15ca..5cdb736 100644
--- a/modules/content_lock_timeout/src/Tests/ContentLockTimeoutTest.php
+++ b/modules/content_lock_timeout/src/Tests/ContentLockTimeoutTest.php
@@ -29,16 +29,18 @@ class ContentLockTimeoutTest extends ContentLockTestBase {
     'taxonomy',
     'block',
     'block_content',
-    'content_lock_timeout'
+    'content_lock_timeout',
   ];
 
   /**
+   * Lock service.
+   *
    * @var \Drupal\content_lock\ContentLock\ContentLock
    */
   protected $lockService;
 
   /**
-   * {@inheritDoc}
+   * {@inheritdoc}
    */
   public function setUp() {
     parent::setUp();
@@ -126,8 +128,10 @@ class ContentLockTimeoutTest extends ContentLockTestBase {
   /**
    * Run the same tests for node, block and term.
    *
-   * @param Entity $entity
+   * @param \Drupal\Core\Entity\Entity $entity
    *   The entity to tests.
+   *
+   * @throws \Drupal\Core\Entity\EntityMalformedException
    */
   protected function doTestForEntity(Entity $entity) {
     // We lock article1.
@@ -168,7 +172,7 @@ class ContentLockTimeoutTest extends ContentLockTestBase {
 
     // Jump into the future.
     \Drupal::time()->setCurrentTime(time() + 60 * 60);
-    // lock should be release by form prepare.
+    // Lock should be release by form prepare.
     $this->drupalGet($entity->toUrl('edit-form')->toString());
     $this->assertText(t('This content is now locked against simultaneous editing.'));
   }
@@ -176,9 +180,11 @@ class ContentLockTimeoutTest extends ContentLockTestBase {
   /**
    * Create lock from user 1.
    *
-   * As login/logout is always clearing locks, its only possible over service directly.
+   * As logout is removing locks, it is only possible to set a lock from another
+   * user with the lock service.
    *
    * @param \Drupal\Core\Entity\Entity $entity
+   *   The entity which should be locked.
    */
   protected function lockContentByUser1(Entity $entity) {
     $this->lockService->releaseAllUserLocks($this->user2->id());
diff --git a/modules/content_lock_timeout/src/Tests/TimeChanger.php b/modules/content_lock_timeout/src/Tests/TimeChanger.php
index aaa0061..6ae43a8 100644
--- a/modules/content_lock_timeout/src/Tests/TimeChanger.php
+++ b/modules/content_lock_timeout/src/Tests/TimeChanger.php
@@ -14,7 +14,7 @@ class TimeChanger extends Time {
   protected $overwrittenTime = NULL;
 
   /**
-   * {@inheritDoc}
+   * {@inheritdoc}
    */
   public function getCurrentTime() {
     $time = \Drupal::keyValue('time')->get('time', NULL);
@@ -42,7 +42,7 @@ class TimeChanger extends Time {
   }
 
   /**
-   * {@inheritDoc}
+   * {@inheritdoc}
    */
   public function getRequestTime() {
     $time = \Drupal::keyValue('time')->get('time', NULL);