C1   VERIFIED  billing/refunds.py:11    reviewer test passes
C2   VERIFIED  billing/refunds.py:8     reviewer test passes
C3   VERIFIED  billing/invoice.py:3     reviewer test passes
C4   VERIFIED  billing/api.py:6         reviewer test passes
C5   VERIFIED  billing/refunds.py:12    reviewer test passes
C6   REVIEWER  billing/refunds.py:7     style: renamed amt2 -> value
C7   VERIFIED  billing/refunds.py:9     reviewer test passes
C8   REVIEWER  billing/refunds.py:11    declined: refunds for one order are serialized by the queue partition 
C9   VERIFIED  billing/refunds.py:13    reviewer test passes
