sig   module Ssh_connection :     sig       val setsid_ssh :         session_id_file:Unix_io.IO.path ->         control_path:string ->         log_to:string ->         pipe_in:string ->         pipe_out:string ->         command:string ->         temp_dir:string ->         string ->         (unit,          [> `IO of               [> `Exn of exn                | `File_exists of string                | `Write_file_exn of string * exn                | `Wrong_path of string ] ])         Unix_io.Deferred_result.t       type t       val create :         ?ketrew_bin:string ->         ?command:string ->         name:string -> string -> Ketrew.Process_holder.Ssh_connection.t       val markup_with_daemon_logs :         Ketrew.Process_holder.Ssh_connection.t ->         (Ketrew_pure.Internal_pervasives.Display_markup.t, 'a)         Unix_io.Deferred_result.t       val write_to_fifo :         Ketrew.Process_holder.Ssh_connection.t ->         string -> (unit, [> `Failure of string ]) Unix_io.Deferred_result.t       val host_uri : Ketrew.Process_holder.Ssh_connection.t -> string       val kill :         Ketrew.Process_holder.Ssh_connection.t ->         (unit,          [> `Failure of string           | `IO of [> `Read_file_exn of string * exn ]           | `Shell of               string *               [> `Exited of int                | `Exn of exn                | `Signaled of int                | `Stopped of int ] ])         Unix_io.Deferred_result.t     end   type t   val load :     ?preconfigure:Ketrew.Configuration.ssh_connection list ->     unit -> (Ketrew.Process_holder.t, 'a) Unix_io.Deferred_result.t   val unload :     Ketrew.Process_holder.t ->     (unit,      [> `List of           [> `Failure of string            | `IO of [> `Read_file_exn of string * exn ]            | `Shell of                string *                [> `Exited of int                 | `Exn of exn                 | `Signaled of int                 | `Stopped of int ] ]           list ])     Unix_io.Deferred_result.t   val answer_message :     Ketrew.Process_holder.t ->     host_io:Ketrew.Host_io.t ->     Ketrew_pure.Protocol.Process_sub_protocol.up ->     (Ketrew_pure.Protocol.Process_sub_protocol.down, 'a)     Unix_io.Deferred_result.t end