* String a2 = peekingIterator.peek(); // also returns "a"
   * String a3 = peekingIterator.next(); // also returns "a"
   * }</pre>
   *
   * <p>Any structural changes to the underlying iteration (aside from those performed by the
   * iterator's own {@link PeekingIterator#remove()} method) will leave the iterator in an undefined
   * state.
   *

                    uniqueElements, hashCode, hashTable, hashTable.length - 1, size);
          } else {
            result = construct(size, contents);
            // construct has the side effect of deduping contents, so we update size
            // accordingly.
            size = result.size();
          }
          forceCopy = true;
          hashTable = null;
          return result;
      }

  }

  /**
   * Returns an unmodifiable view of the specified map entry. The {@link Entry#setValue} operation
   * throws an {@link UnsupportedOperationException}. This also has the side effect of redefining
   * {@code equals} to comply with the Entry contract, to avoid a possible nefarious implementation
   * of equals.
   *
   * @param entry the entry for which to return an unmodifiable view