public function savePchFileFromRawData(&$pchData, Doctrine_Connection $conn = null)
 {
     if ($this->getPchFileId()) {
         $pchFile = $this->getPchFile();
     } else {
         $pchFile = new File();
     }
     $pchFile->setType('image/pch');
     $pchFile->setName('cccc_' . time() . '_pch');
     $pchFile->save($conn);
     $fileBin = $pchFile->getFileBin();
     if (!$fileBin) {
         $fileBin = new FileBin();
         $fileBin->setFileId($pchFile->getId);
     }
     $fileBin->setBin($pchData);
     $fileBin->save($conn);
     $this->setPchFileId($pchFile->getId());
 }