/guava/android/guava/src/com/google/common/collect/ImmutableSet.java
if ( ( hashTable) != null) {   for ( E e : elements) {     add( e) ;   } }else {   super.addAll( elements) ; }
[Delete]
return this; } } @Override @CanIgnoreReturnValue public Builder<E> add(E... elements) { <extra_id_0> for (E e : elements) { add(e); } } else { super.add(elements); }