android/guava/src/com/google/common/collect/ConcurrentHashMultiset.java
public static <E> ConcurrentHashMultiset<E> create(Iterable<? extends E> elements) {
    ConcurrentHashMultiset<E> multiset = ConcurrentHashMultiset.create();
    Iterables.addAll(multiset, elements);
    return multiset;
  }
public static <E> ConcurrentHashMultiset<E> create(Iterable<? extends E> elements) {
    ConcurrentHashMultiset<E> multiset = ConcurrentHashMultiset.create();
    Iterables.addAll(multiset, elements);
    return multiset;
  }
Creates a new {@code ConcurrentHashMultiset} containing the specified elements, using the
default initial capacity, load factor, and concurrency settings.

<p>This implementation is highly efficient when {@code elements} is itself a {@link Multiset}.

@param elements the elements that the multiset should contain