public function list_( $args, $assoc_args ) {
		$formatter = $this->get_formatter( $assoc_args );

		$schedules = self::get_schedules();

		if ( 'ids' === $formatter->format ) {
			echo implode( ' ', wp_list_pluck( $schedules, 'name' ) );
		} else {
			$formatter->display_items( $schedules );
		}

	}