Method of

output/java_guava/1.4.18/ImmutableSet.java:50–53

Returns the empty immutable set. Preferred over Collections#emptySet for code consistency, and because the return type conveys the immutability guarantee.

()

   * consistency, and because the return type conveys the immutability guarantee.
   */
  @SuppressWarnings({"unchecked"}) // fully variant implementation (never actually produces any Es)
  public static <E> ImmutableSet<E> of() {
    return (ImmutableSet<E>) RegularImmutableSet.EMPTY;
  }

  /**
   * Returns an immutable set containing {@code element}. Preferred over {@link