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

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

const someNum = 5
const someStr = "some-str"

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

func multiReturnFunc(somethingToReturn: []u8, smthOption: ?string) -> []string, u8, string, []u8, ?string, u8:
    res: *string
    res <- GetStr.retStr(someStr)
    res <- GetStr.retStr("random-str")
    res, tNum <- tupleFunc()
    <- res, 5, someStr, somethingToReturn, smthOption, tNum