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