of a preferences section. * * @since 1.35 * * @param HTMLForm $form the HTMLForm object. This is a ContextSource as well * @param string $key the section name * @param string &$legend the legend text. Defaults to wfMessage( "prefs-$key" )->text() but may * be overridden * @return bool|void True or no return value to continue or false to abort */ public function onPreferencesGetLegend( $form, $key, &$legend ); }