d.
	 *
	 * @return array The prepared data
	 */
	abstract protected function prepare_data( $data );

	/**
	 * Run the do_action function for the asynchronous postback.
	 *
	 * This method needs to fetch and sanitize any and all data from the $_POST
	 * superglobal and provide them to the do_action call.
	 *
	 * The action should be constructed as "wp_async_task_$this->action"
	 */
	abstract protected function run_action();

}