sig
val get :
([< `Client_process | `Session | `Session_group ], [< `Data | `Pers ])
Eliom_state.Ext.state -> 'a Eliom_reference.eref -> 'a Lwt.t
val set :
([< `Client_process | `Session | `Session_group ], [< `Data | `Pers ])
Eliom_state.Ext.state -> 'a Eliom_reference.eref -> 'a -> unit Lwt.t
val modify :
([< `Client_process | `Session | `Session_group ], [< `Data | `Pers ])
Eliom_state.Ext.state ->
'a Eliom_reference.eref -> ('a -> 'a) -> unit Lwt.t
val unset :
([< `Client_process | `Session | `Session_group ], [< `Data | `Pers ])
Eliom_state.Ext.state -> 'a Eliom_reference.eref -> unit Lwt.t
end