How to use the omnipay-alipay secret refund function

is there a non-secret refund function in omnipay-alipay?
if so, where did the document turn around and couldn"t find it

Sep.01,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e5ac5d-44551.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e5ac5d-44551.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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