service GetStr("multiret-test"):
    retStr: string -> string

service GetNum("multiret-num"):
    retNum: -> u8

const SOME_NUM = 5
const SOME_STR = "some-str"

func tupleFunc() -> string, u8:
    str <- GetStr.retStr(SOME_STR)
    n <- GetNum.retNum()
    <- str, n

func multiReturnFunc(somethingToReturn: []u8, smthOption: ?string) -> []string, u8, string, []u8, ?string, u8 :
    res: *string
    res <- GetStr.retStr(SOME_STR)
    res <- GetStr.retStr("random-str")
    res, tNum <- tupleFunc()
    <- res, SOME_NUM, SOME_STR, somethingToReturn, smthOption, tNum