public function parse()
    {
        $this->data->version = $this->readLong();
        if ($this->data->version == 0 || $this->data->version == 1) {
            $this->data->subVersion = $this->data->version;
        } else {
            $this->data->subVersion = $this->readLong();
        }

        if ($this->data->subVersion == 1) {
            $this->data->mainCustomCodeComment = $this->readString();
            $this->data->mainCustomCode = $this->readTriggerStruct();
        } elseif ($this->data->subVersion == 0) {
            $this->data->mainCustomCodeComment = '';
            $this->data->mainCustomCode = '';
        } else {
            throw new \Exception("Unexpected version value of '{$this->data->version}'");
        }

        if ($this->data->version <= 1) {
            $this->skip(4);
        }

        $this->data->customTriggers = [];
        while (!$this->endOfFile()) {
            $this->data->customTriggers[] = $this->readTriggerStruct();
        }
    }

    public function readTriggerStruct()
    {
        $length = $this->readLong();
        if ($length == 0) {
            return null;
        }

        return $this->readString();
    }