function($prop) { $class = trim((string)($prop['class'] ?? '')); $title = (string)($prop['title'] ?? ''); $subtitle = (string)($prop['subtitle'] ?? ''); $titleId = trim((string)($prop['title_id'] ?? '')); $subtitleId = trim((string)($prop['subtitle_id'] ?? '')); $actionsHtml = (string)($prop['actions_html'] ?? ''); ob_start(); ?>
> class="ws-subtitle">

'Panel heading with title, optional subtitle, and actions slot', ];