While this sounds like a useful thing to have in a...

# language-proposals

[mg6maciej]

While this sounds like a useful thing to have in a language (there are many annotations like this for Android developers checked by IDE), I think explicitly stating in your code your requirements about vararg param is not much worse:

fun myFun(vararg myVararg: Any) {
    if (myVararg.size < 1) throwSth()
    ...

fun myFun(@Elements(min = 1) vararg myVararg: Any) {
    ...