Make.Fetchermodule IoStyle : Utils.IoStyleexceptions thrown in executing second argument of bind is expected to be caught and could be retrieved using extract_error
module Response : JsonResponseval perform_get : 
  urlpath:string ->
  headers:string list ->
  query_params:(string * string) list ->
  Response.t IoStyle.tval perform_post : 
  urlpath:string ->
  headers:string list ->
  query_params:(string * string) list ->
  body:Kxclib.Json.jv ->
  Response.t IoStyle.t