Forum sort order, posts with the least comments first. File core/modules/forum/src/ForumManager.php,

public ForumManager::getChildren($vid, $tid)

Forum settings config object. Type:

Array of last post information keyed by forum (term) id. Type:

protected ForumManager::getLastPost($tid)

public ForumManager::checkNodeType(NodeInterface $node)

Array of history keyed by nid. Type:

Forum sort order, posts with most comments first. File core/modules/forum/src/ForumManager.php, line

Entity manager service Type:

The comment manager service. Type: