StatusName:
| "OK"
| "CANCELLED"
| "UNKNOWN"
| "INVALID_ARGUMENT"
| "DEADLINE_EXCEEDED"
| "NOT_FOUND"
| "ALREADY_EXISTS"
| "PERMISSION_DENIED"
| "UNAUTHENTICATED"
| "RESOURCE_EXHAUSTED"
| "FAILED_PRECONDITION"
| "ABORTED"
| "OUT_OF_RANGE"
| "UNIMPLEMENTED"
| "INTERNAL"
| "UNAVAILABLE"
| "DATA_LOSS"
A string union of all supported status names (e.g.
'OK','NOT_FOUND','INTERNAL').