PhpOffice\PhpPresentation\Reader\PowerPoint97::readRecordDrawingContainer PHP Method

    private function readRecordDrawingContainer($stream, $pos)
    {
        $arrayReturn = array('length' => 0);
        $data = $this->loadRecordHeader($stream, $pos);
        if ($data['recVer'] == 0xf && $data['recInstance'] == 0x0 && $data['recType'] == self::RT_DRAWING) {
            // Record Header
            $arrayReturn['length'] += 8;
            $officeArtDg = $this->readRecordOfficeArtDgContainer($stream, $pos + $arrayReturn['length']);
            $arrayReturn['length'] += $officeArtDg['length'];
        }
        return $arrayReturn;
    }