Mavryk_protocol_environment_demo_noops.RPC_argtype 'a arg = 'a tval make : 
  ?descr:string ->
  name:string ->
  destruct:(string -> ('a, string) Pervasives.result) ->
  construct:('a -> string) ->
  unit ->
  'a argval bool : bool argval int : int argval uint : int argval int32 : int32 argval uint31 : int32 argval int64 : int64 argval uint63 : int64 argval string : string arg