https://api.drupal.org/api/drupal/core%21themes%21claro%21src%21ClaroPreRender.php/9
ClaroPreRender.php | Drupal API
phpdrupalapi
https://api.drupal.org/api/drupal/core%21themes%21claro%21src%21ClaroPreRender.php/function/ClaroPreRender%3A%3AmessagePlaceholder/10
function ClaroPreRender::messagePlaceholder | Drupal API
functiondrupalapi