e/blob/b8a2815ae546c836467008739e7ff5150cb08e93/includes/data-stores/class-wc-order-refund-data-store-cpt.php#L20 .
		'_order_currency',
		'_refund_amount',
		'_refunded_by',
		'_refund_reason',
		'_order_shipping',
		'_order_shipping_tax',
		'_order_tax',
		'_order_total',
		'_order_version',
		'_prices_include_tax',
		'_payment_tokens',
	);

	/**
	 * Whitelist for comment meta we are interested to sync.
	 *
	 * @access private
	 * @static
	 *
	 * @var array
	 */
	private static $wc_comment_meta_whitelist = array(
		'rating',
	);

	/**
	 * Return a list of objects by their type and IDs
	 *
	 * @param string $object_type Object type.
	 * @param array  $ids IDs of objects to return.
	 *
	 * @access public
	 *
	 * @return array|object|WP_Error|null
	 */
	public function get_objects_by_id( $object_type, $ids ) {
		switch ( $object_type ) {
			case 'order_item':
				return $this->get_order_item_by_ids( $ids );
		}

		return new WP_Error( 'unsupported_object_type', 'Unsupported object type' );
	}

	/**
	 * Returns a list of order_item objects by their IDs.
	 *
	 * @param array $ids List of order_item IDs to fetch.
	 *
	 * @access public
	 *
	 * @return array|object|null
	 */
	public function get_order_item_by_ids( $ids ) {
		global $wpdb;

		if ( ! is_array( $ids ) ) {
			return array();
		}

		// Make sure the IDs are numeric and are non-zero.
		$ids = array_filter( array_map( 'intval', $ids ) );

		if ( empty( $ids ) ) {
			return array();
		}

		// Prepare the placeholders for the prepared query below.
		$placeholders = implode( ',', array_fill( 0, count( $ids ), '%d' ) );

		$query = "SELECT * FROM {$this->order_item_table_name} WHERE order_item_id IN ( $placeholders )";

		// phpcs:ignore WordPress.DB.PreparedSQL.NotPrepared
		return $wpdb->get_results( $wpdb->prepare( $query, $ids ), ARRAY_A );
	}
}