Refactoring one line of code

src/Entity/Builder/PrivateMessageViewBuilder.php

@@ -70,7 +70,7 @@ class PrivateMessageViewBuilder extends EntityViewBuilder {
 
     $classes = ['private-message'];
     $classes[] = 'private-message-' . $viewMode;
-    $classes[] = 'private-message-' . ($this->currentUser->id() == $entity->getOwnerId() ? 'author-self' : 'author-other');
+    $classes[] = 'private-message-author-' . ($this->currentUser->id() == $entity->getOwnerId() ? 'self' : 'other');
     $id = 'private-message-' . $entity->id();
 
     $build['wrapper'] = [