/guava/android/guava/src/com/google/common/collect/ImmutableSet.java
return of( elements[0]) ;checkNotNull( elements) ;
checkNotNull ( elements ) ;
} return this; } @CanIgnoreReturnValue @Override public Builder<E> addAll(Iterator<? extends E> elements) { <extra_id_0> while (elements.hasNext()) { add(elements.next()); } return this; } @CanIgnoreReturnValue