stderr:
<stdin>:14:1: warning: result of call to 'enumTag' is unused enumTag(Permission.freeDuring(date1 ..< date2)) ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <stdin>:15:1: warning: result of call to 'enumTag' is unused enumTag(Permission.free) ^ ~~~~~~~~~~~~~~~~~ <stdin>:16:1: warning: result of call to 'enumTag' is unused enumTag(Permission.subscriberOnly) ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~