private function readCsv($fullPath)
    {
        $result = [];
        $entries = $this->hlpCsv->read($fullPath);
        foreach ($entries as $one) {
            $i=0;
            $fromId = $one[$i++];
            $fromName = $one[$i++];
            $toId = $one[$i++];
            $toName = $one[$i++];
            $volume = $one[$i++];

            $item = new DItem();
            $item->from = $fromId;
            $item->to = $toId;
            $item->value = $volume;
            $result[] = $item;
        }
        return $result;
    }