Module type Async.S1
val invariant : 'a Async_kernel__.Async_invariant_intf.Async.inv -> 'a t Async_kernel__.Async_invariant_intf.Async.inv
Async.S1
val invariant : 'a Async_kernel__.Async_invariant_intf.Async.inv -> 'a t Async_kernel__.Async_invariant_intf.Async.inv