public function initHtmlPurifier($prepend) {
if (class_exists('HTMLPurifier_Bootstrap')) {
// HTMLPurifier is already initialized, e.g. by the Drupal module.
public function initHtmlPurifier($prepend) {
if (class_exists('HTMLPurifier_Bootstrap')) {
// HTMLPurifier is already initialized, e.g. by the Drupal module.