case WILL_CLOSE:
        case CLOSING:
        case CLOSED:
          throw new IllegalStateException("Cannot call finishToFuture() twice");

        case OPEN:
          throw new AssertionError();
      }
    }
    return future;
  }

  /**

then, when you've cleared all the jelly-fish out of the way--'

  `THAT generally takes some time,' interrupted the Gryphon.

  `--you advance twice--'

  `Each with a lobster as a partner!' cried the Gryphon.

  `Of course,' the Mock Turtle said:  `advance twice, set to
partners--'

  `--change lobsters, and retire in same order,' continued the
Gryphon.

 * need to be on the same host. This operation does not copy extended
 * file attibutes such as ACLs but it does copy regular attributes as
 * well as create and last write times. This method is almost twice as
 * efficient as manually copying as it employs an additional write
 * thread to read and write data concurrently.
 * <p/>
 * It is not possible (nor meaningful) to copy entire workgroups or
 * servers.
 *

<a href="#Function_declarations">function</a>,
<a href="#Labeled_statements">label</a>, or
<a href="#Import_declarations">package</a>.
Every identifier in a program must be declared.
No identifier may be declared twice in the same block, and
no identifier may be declared in both the file and package block.
</p>

<p>
The <a href="#Blank_identifier">blank identifier</a> may be used like any other identifier