public function render_callback( $attributes = array(), $content = '' ) {
		llms_deprecated_function( __METHOD__, '2.5.0' );

		$this->add_hooks( $attributes, $content );

		ob_start();
		do_action( $this->get_render_hook(), $attributes, $content );
		$ret = ob_get_clean();

		$this->remove_hooks();

		if ( ! $ret ) {
			$ret = $this->get_empty_render_message();
		}

		return $ret;
	}