/guava/android/guava/src/com/google/common/collect/ImmutableSet.java
requireNonNull ( hashTable ) ;
} else { super.add(elements); } return this; } private void addDeduping(E element) { <extra_id_0> int mask = hashTable.length - 1; int hash = element.hashCode(); for (int i = Hashing.smear(hash); ; i++) { i &= mask; Object previous = hashTable[i]; if (previous == null) {