val init : string list -> t
val set_validated_collector : (unit -> float) -> unit
val set_refused_collector : (unit -> float) -> unit
val set_branch_refused_collector : (unit -> float) -> unit
val set_branch_delayed_collector : (unit -> float) -> unit
val set_outdated_collector : (unit -> float) -> unit
val set_unprocessed_collector : (unit -> float) -> unit