function testCurrent()
  {
    $this->assertFalse(UIDGenerator :: current());

    UIDGenerator :: next();
    UIDGenerator :: next();
    UIDGenerator :: next();

    $this->assertEqual(UIDGenerator :: current(), 3);
  }
 function nextUID()
 {
   include_once(LIMB_DIR . '/core/orm/UIDGenerator.class.php');
   return UIDGenerator :: next();
 }