* found.
* <p>
* @param accessKey Access key on the online PDF
+ * <p>
* @return Wrapped byte stream
*/
public WrapableReceipt createReceiptFromAccessKey (final String accessKey);
* Fetches access key, if customer instance matches, else null is returned
* <p>
* @param customer Customer instance
+ * <p>
* @return Access key or null
*/
public String fetchAccessKey (final Customer customer);