Warning: When created from a file descriptor, the resulting mailbox can only be traversed once.
type t
= Message.t Core_extended.Std.Lazy_sequence.t
val t_of_fd : Core.In_channel.t ‑> t
val t_of_file : string ‑> t
val of_string : string ‑> t
val iter_string : t ‑> f:(string ‑> unit) ‑> unit