?selection_mode:([`SINGLE|`MULTIPLE]) -> ?title:string ->
?msg:string -> ?nonvars_button:bool ->
?hide_uri_entry:bool -> ?hide_try:bool -> ?ok_label:string ->
+ ?ok_action:[`AUTO|`SELECT] ->
?copy_cb:(string -> unit) -> unit ->
MatitaDisambiguator.choose_uris_callback