Method copyOf

corpus/java/training/guava/collect/ImmutableList.java:209–214

Returns an immutable list containing the given elements, in order. If elements is a Collection, this method behaves exactly as #copyOf(Collection); otherwise, it behaves exactly as copyOf(elements.iterator(). @throws NullPointerException if any of elements is

(Iterable<? extends E> elements)

   * @throws NullPointerException if any of {@code elements} is null
   */
  public static <E> ImmutableList<E> copyOf(Iterable<? extends E> elements) {
    checkNotNull(elements); // TODO(kevinb): is this here only for GWT?
    return (elements instanceof Collection)
        ? copyOf((Collection<? extends E>) elements)
        : copyOf(elements.iterator());
  }

  /**
   * Returns an immutable list containing the given elements, in order.