val unsafe_next : t -> int -> unitval unsafe_prev : t -> int -> unitval unsafe_move : t -> int -> int -> unitval next : t -> int -> unitval prev : t -> int -> unitval move : t -> int -> int -> unitval get_float64 : t -> int -> floatval set_float64 : t -> int -> float -> unitval get_int : t -> int -> intval set_int : t -> int -> int -> unitval get_int64 : t -> int -> int64val set_int64 : t -> int -> int64 -> unitval get_string : t -> int -> int -> stringval set_string : t -> int -> int -> string -> unitval seek_int : t -> int -> int -> int -> unitval seek_int64 : t -> int -> int -> int64 -> unitval seek_float64 : t -> int -> int -> float -> unitval seek_string : t -> int -> int -> int -> string -> unit