Update.Polymodule Stable : sig ... endtype ('action, 'coinbase_amount) t =
  ( 'action, 'coinbase_amount ) Stable.Latest.t =
  {| action : 'action; | 
| coinbase_amount : 'coinbase_amount; | 
}include Ppx_sexp_conv_lib.Sexpable.S2
  with type ('action, 'coinbase_amount) t := ( 'action, 'coinbase_amount ) tval t_of_sexp : 
  ( Sexplib0__.Sexp.t -> 'a ) ->
  ( Sexplib0__.Sexp.t -> 'b ) ->
  Sexplib0__.Sexp.t ->
  ( 'a, 'b ) tval sexp_of_t : 
  ( 'a -> Sexplib0__.Sexp.t ) ->
  ( 'b -> Sexplib0__.Sexp.t ) ->
  ( 'a, 'b ) t ->
  Sexplib0__.Sexp.t