/guava/android/guava/src/com/google/common/collect/ImmutableCollection.java
return null;
return this;
@CanIgnoreReturnValue @Override public ArrayBasedBuilder<E> add(E element) { checkNotNull(element); getReadyToExpandTo(size + 1); contents[size++] = element; <extra_id_0> } @CanIgnoreReturnValue @Override public Builder<E> add(E... elements) { addAll(elements, elements.length); return this;