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