protected function _testCacheUniqueness()
{
$cache = new Horde_ActiveSync_SyncCache(self::$state, 'dev123', 'bob', self::$logger->getLogger());
$this->assertEquals(array(), $cache->getFolders());
$cache = new Horde_ActiveSync_SyncCache(self::$state, 'dev456', 'mike', self::$logger->getLogger());
$this->assertEquals(array(), $cache->getFolders());
}