/guava/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ImmutableCollection.java
add( checkNotNull( elements.next( ) ) ) ;checkNotNull( elements) ;
checkNotNull ( elements ) ;
add(checkNotNull(element)); } return this; } @CanIgnoreReturnValue public Builder<E> addAll(Iterator<? extends E> elements) { <extra_id_0> while (elements.hasNext()) { add(checkNotNull(elements.next())); } return this; } public abstract ImmutableCollection<E> build();