ensure
inline fun <T, TArray, Stack> ensureArgsConvertedAndConvert(stack: Stack, expr: T, args: TArray, expectedSize: Int, stackPush: (Stack, T) -> Unit, arraySize: (TArray) -> Int, arrayGet: (TArray, Int) -> T, findConverted: (T) -> KExpr<*>?): List<KExpr<*>>?
Ensure all expression arguments are already converted. Return converted arguments or null if not all arguments converted.