private function _prepareSynchronizationHandler()
{
$synchronization = new Horde_Kolab_Storage_List_Synchronization_Base($this->_driver);
if (isset($this->_params['log']) && (in_array('debug', $this->_params['log']) || in_array('list_synchronization', $this->_params['log']))) {
$synchronization = new Horde_Kolab_Storage_List_Synchronization_Decorator_Log($synchronization, $this->_logger);
}
$this->_synchronization = $synchronization;
}