sig
type query
type response
type error
val implement_multi :
?log_not_previously_seen_version:(name:string -> int -> unit) ->
('state ->
Versioned_rpc.Callee_converts.Pipe_rpc.S.query ->
aborted:unit Import.Deferred.t ->
(Versioned_rpc.Callee_converts.Pipe_rpc.S.response Import.Pipe.Reader.t,
Versioned_rpc.Callee_converts.Pipe_rpc.S.error)
Core.Std.Result.t Import.Deferred.t) ->
'state Rpc.Implementation.t list
val versions : unit -> Core.Std.Int.Set.t
end