*     uniqueIndex(allColors, c -> c.toString());
   * assertThat(colorForName).containsEntry("red", red);
   * }</pre>
   *
   * <p>If your index may associate multiple values with each key, use {@link
   * Multimaps#index(Iterable, Function) Multimaps.index}.
   *
   * <p><b>Note:</b> on Java 8+, it is usually better to use streams. For example:
   *
   * <pre>{@code

 * </td></tr>
 * 
 * <tr><td width="20%"><code>smb1://myworkgroup/</code></td><td>
 * This syntactically is identical to the above example. However if
 * <code>myworkgroup</code> happends to be a workgroup(which is indeed
 * suggested by the name) the <code>list</code> method will return
 * a list of servers that have registered themselves as members of
 * <code>myworkgroup</code>.
 * </td></tr>
 *