val add : 'a t -> key -> 'a -> unitval remove : 'a t -> key -> unitval find : 'a t -> key -> 'aval find_opt : 'a t -> key -> 'a optionval find_all : 'a t -> key -> 'a listval replace : 'a t -> key -> 'a -> unitval mem : 'a t -> key -> boolval iter : (key -> 'a -> unit) -> 'a t -> unitval filter_map_inplace : (key -> 'a -> 'a option) -> 'a t -> unitval fold : (key -> 'a -> 'b -> 'b) -> 'a t -> 'b -> 'bval to_seq_values : 'a t -> 'a Seq.tval add_seq : 'a t -> (key * 'a) Seq.t -> unitval replace_seq : 'a t -> (key * 'a) Seq.t -> unit