tailIndex = newIndex;
                tail = e;
              }
            }
            newTable.set(tailIndex, tail);

            // Clone nodes leading up to the tail.
            for (ReferenceEntry<K, V> e = head; e != tail; e = e.getNext()) {
              int newIndex = e.getHash() & newMask;
              ReferenceEntry<K, V> newNext = newTable.get(newIndex);

                tailIndex = newIndex;
                tail = e;
              }
            }
            newTable.set(tailIndex, tail);

            // Clone nodes leading up to the tail.
            for (ReferenceEntry<K, V> e = head; e != tail; e = e.getNext()) {
              int newIndex = e.getHash() & newMask;
              ReferenceEntry<K, V> newNext = newTable.get(newIndex);