    //BinaryOperator
    //BiPredicate
    //Predicate
    //UnaryOperator
    //Stream (kinda)
StreamSupport
    //Optional
    //Map
    //Set
    //AbstractCollection
    //AbstractSet
    //AbstractMap
    //HashMap
    //LinkedHashMap
ConcurrentHashMap
HashSet
List
ArrayList
LinkedList
LinkedHashMap
LinkedHashSet
Queue
ArrayQueue
ConcurrentLinkedQueue
Deque
ArrayDeque
Throwing functions

UNIT TESTS REEEEE
