Reports suspicious usages of Collection or an Iterable in vararg method calls. E.g. given method
<T> boolean contains(T needle, T... haystack) {...}

a call like

if(contains("item", listOfStrings)) {...}

looks suspicious as the list will be wrapped into a single element array. Such code can be successfully compiled and likely run without exceptions, but it's unlikely intended.

New in 2019.2