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