Method of

src/main/java/org/apache/commons/lang3/stream/Streams.java:675–677

Delegates to Collection#stream() or returns Stream#empty() if the collection is null. @param The type of elements in the collection. @param collection the collection to stream or null. @return Collection#stream() or Stream#empty() if the collection is null. @sinc

(final Collection<E> collection)

     * @since 3.13.0
     */
    public static <E> Stream<E> of(final Collection<E> collection) {
        return collection == null ? Stream.empty() : collection.stream();
    }

    /**
     * Streams the elements of the given enumeration in order.