protected function initializeFromStorage()
  {
    $this->debugLog('initializeFromStorage()');
    $this->lists=$this->storage->getLists();
    $this->next_request_timestamp=$this->storage->getNextRunTimestamp();
    $this->error_count=$this->storage->getErrorCount();
    
    $this->debugLog('current memory usage: '.memory_get_usage());
    $this->debugLog('peak memory usage   : '.memory_get_peak_usage());
  }