`object
method register : Netsys_pmanage.pm_obj list -> unit
method register_file : string -> unit
method register_posix_sem : string -> unit
method register_posix_shm : string -> unit
method register_sem_cont : string -> unit
method registered : Netsys_pmanage.pm_obj list
method unlink : unit -> unit
method unregister_file : string -> unit
method unregister_posix_sem : string -> unit
method unregister_posix_shm : string -> unit
method unregister_sem_cont : string -> unit
end`