val close : _ t ‑> unit
val closed : _ t ‑> unit Async_kernel.Deferred.t
val is_closed : _ t ‑> bool
val write : 'a t ‑> 'a ‑> [ `Flushed of unit Async_kernel.Deferred.t | `Closed ]
val write_without_pushback : 'a t ‑> 'a ‑> [ `Ok | `Closed ]
val flushed : _ t ‑> unit Async_kernel.Deferred.t
val bin_writer : 'a t ‑> 'a Bin_prot.Type_class.writer
module Expert : sig ... end