### Question:
HashBag implements MutableBag<T> { @Override public void forEach(Consumer<? super T> consumer) { this.backingMap.forEach((key, count) -> { for (int i = 0; i < count; i++) { consumer.accept(key); } }); }  @Override int sizeDistinct(); @Override int size(); @Override boolean isEmpty(); @Override boolean contains(Object o); @Override Object[] toArray(); void forEachWithIndex(BiConsumer<? super T, Integer> biConsumer); @Override T1[] toArray(T1[] array); @Override boolean add(T element); @Override boolean remove(Object o); @Override boolean containsAll(Collection<?> c); @Override boolean addAll(Collection<? extends T> c); @Override boolean removeAll(Collection<?> c); @Override boolean retainAll(Collection<?> c); @Override void clear(); @Override Iterator<T> iterator(); @Override int getOccurrences(T element); @Override boolean addOccurrence(T element); @Override boolean addOccurrences(T element, int occurrences); @Override boolean removeOccurrence(T element); @Override boolean removeOccurrences(T element, int occurrences); @Override void forEachWithOccurrences(BiConsumer<? super T, Integer> biConsumer); @Override void forEach(Consumer<? super T> consumer); @Override int hashCode(); @Override boolean equals(Object other);  }### Answer:
@Test public void forEach() { MutableList<String> list = MutableList.empty(); this.testObj.withAll("1", "2", "3", "2", "3", "3") .forEach((each) -> list.add(each)); Assert.assertEquals(MutableList.of("1", "2", "2", "3", "3", "3"), list); }