Module Bus.First_arity

type (_, _, _) t =
| Arity1 : ('a -> unit, 'a -> 'r option, 'r) t
| Arity2 : ('a -> 'b -> unit, 'a -> 'b -> 'r option, 'r) t
| Arity3 : ('a -> 'b -> 'c -> unit, 'a -> 'b -> 'c -> 'r option, 'r) t
| Arity4 : ('a -> 'b -> 'c -> 'd -> unit, 'a -> 'b -> 'c -> 'd -> 'r option, 'r) t
val sexp_of_t : ('v_x__001_ -> Ppx_sexp_conv_lib.Sexp.t) -> ('v_x__002_ -> Ppx_sexp_conv_lib.Sexp.t) -> ('v_x__003_ -> Ppx_sexp_conv_lib.Sexp.t) -> ('v_x__001_'v_x__002_'v_x__003_) t -> Ppx_sexp_conv_lib.Sexp.t