public static function get_instance() { if (!isset(self::$instance)) { self::$instance = new SBP_GoogleLibraries(); } return self::$instance; }
function sbp_use_google_libraries() { require_once SPEED_BOOSTER_PACK_PATH . 'inc/use-google-libraries.php'; if (class_exists('SBP_GoogleLibraries')) { SBP_GoogleLibraries::configure_plugin(); } }