guava/src/com/google/common/collect/FluentIterable.java
@Beta
  public static <E> FluentIterable<E> of(@Nullable E element, E... elements) {
    return from(Lists.asList(element, elements));
  }
@Beta
  public static <E> FluentIterable<E> of(@Nullable E element, E... elements) {
    return from(Lists.asList(element, elements));
  }
Returns a fluent iterable containing the specified elements in order.

<p><b>{@code Stream} equivalent:</b> {@link java.util.stream.Stream#of(Object[])
Stream.of(T...)}.

@since 20.0