`sig
val check_deprecated : Location.t -> Parsetree.attributes -> string -> unit
val deprecated_of_attrs : Parsetree.attributes -> string option
val deprecated_of_sig : Parsetree.signature -> string option
val deprecated_of_str : Parsetree.structure -> string option
val check_deprecated_mutable :
Location.t -> Parsetree.attributes -> string -> unit
val error_of_extension : Parsetree.extension -> Location.error
val warning_enter_scope : unit -> unit
val warning_leave_scope : unit -> unit
val warning_attribute : Parsetree.attributes -> unit
val with_warning_attribute : Parsetree.attributes -> (unit -> 'a) -> 'a
val emit_external_warnings : Ast_iterator.iterator
val warn_on_literal_pattern : Parsetree.attributes -> bool
val explicit_arity : Parsetree.attributes -> bool
val immediate : Parsetree.attributes -> bool
val has_unboxed : Parsetree.attributes -> bool
val has_boxed : Parsetree.attributes -> bool
end`