/guava/guava-gwt/src-super/com/google/common/collect/super/com/google/common/collect/ImmutableSet.java
super.add( elements) ;super.addAll( elements) ;
super.addAll ( elements ) ;
super.addAll(elements); return this; } @CanIgnoreReturnValue @Override public Builder<E> addAll(Iterator<? extends E> elements) { <extra_id_0> return this; } @CanIgnoreReturnValue Builder<E> combine(Builder<E> builder) { contents.addAll(builder.contents); return this;